http://www.fitnesstantra.com/ en Wed, 08 Sep 2010 23:32:49 GMT vBulletin 60 http://www.fitnesstantra.com/images/misc/rss.png http://www.fitnesstantra.com/ http://www.fitnesstantra.com/threads/1539-Increased-Red-Blood-Cell-Volume?goto=newpost Mon, 23 Aug 2010 08:43:55 GMT To great altitudes, there is a diminution in the oxygen saturation of the *hemoglobin*. In order to compensate this, the erythropoietin (EPO), a... To great altitudes, there is a diminution in the oxygen saturation of the hemoglobin. In order to compensate this, the erythropoietin (EPO), a hormone secreted by the kidneys, stimulates the red globule production of the bony marrow to increase the saturation of the hemoglobin and the oxygen contribution. It is not known how long takes this adaptation, because diverse studies have found different conclusions on the base from the amount of time dedicated to high altitude.
Although the EPO takes place naturally in the body, also it is made of synthetic way to help to treat the patients who suffer of renal insufficiency and to treat to the patients during the chemotherapy. In the last thirty years, the OEP has become frequently object of abuse by competitive athletes through doping of blood and the injections with the purpose of obtaining advantages in resistance events. The EPO abuse, nevertheless, increases the count of erythrocytes beyond the normal levels (polycythemia) and increases viscosity of the blood, that can give rise to the hypertension and the increase of the probability that a sanguineous clot, attacks the heart or a cerebral spill. The natural secretion of EPO by the human kidneys can be increased the training in altitude, but the body has limits in the amount of the natural resources OEP that are secreted, avoiding therefore the negative indirect effect of the procedures of illegal doping. ]]> Know Your Body Gourav http://www.fitnesstantra.com/threads/1539-Increased-Red-Blood-Cell-Volume http://www.fitnesstantra.com/threads/1523-Oily-skin-causes?goto=newpost Sun, 22 Aug 2010 17:05:55 GMT The oily skin is caused by excess of asset of sebaceous glands, that produce a substance called sebum, a natural lubricant of the healthful skin.... The oily skin is caused by excess of asset of sebaceous glands, that produce a substance called sebum, a natural lubricant of the healthful skin. When the skin produces sebum excess, becomes heavy and thick in the texture. The oily skin is characterized by the brightness, spots and spines. the type of oily skin is not necessarily bad, since that the skin is less inclined rugas, or other signals of aging, because the oil helps to keep the blocked necessary humidity for the epidermis (more external layer of the skin).

The negative aspect of the type of oily skin is that oily complexition are especially susceptible the blockage them pores, black color, and accumulation of cells deceased of the skin in the surface of the skin. the oily skin can be sallow and rough in the texture and tends has it great visible pores in all part, except around the eyes and neck.

The objective of the treatment of the oily skin is to remove the sebum excess of the surface without complete removal of lipids of the skin. Serious desengorduramento treatment can foment an aggravation real of the sebum secretion, what frustra the purpose of the cleanness. a method of cleanness of the oil skin is clean with a natural face cleaner formulated especially for the oily skin. pH of cleanness must be 4,5-5,5, since the value of pH of the skin is of approximately 5.4. Gel of cleanness works better in the oily skin. (to see: surfactante) products for the oily skin must contain few natural oils very. They do not have to contain waxes or other agents of synthetic lipodies that can aggravate the condition of the oily skin. A tonificante lotion also must be natural and has one pH of 4,5-5,5 and formulated especially to help to balance and to hydrater the oily skin. Some products of acid cleanness have minor concentration of hydroxi, that they remove the cells deceased of the superior levels of the corneume stratom. These products must be used in a regular base to work adequately.

In the cases of extreme sebum production, it has had stories of success of control with use of alimentary suplementation of niacina (B3 vitamin), in the dose of 500 mg the 1,000 mg per day. ]]> Know Your Body Rohan http://www.fitnesstantra.com/threads/1523-Oily-skin-causes http://www.fitnesstantra.com/threads/1522-Muscle-amp-it-s-types?goto=newpost Sun, 22 Aug 2010 17:04:33 GMT Muscle is derived from the mesodermal layer of the embryonic germinativas cells. The muscular cells contain filaments contract that to move... Muscle is derived from the mesodermal layer of the embryonic germinativas cells. The muscular cells contain filaments contract that to move themselves between itself and to modify the size of the cell. They are classified as skeletal, cardiac or muscular smooth. Its function is to produce force and movement cause. The muscles can in such a way cause the locomotion of the proper organism or the circulation of internal agencies. Cardiopath and contraction of the smooth muscle occur without conscientious thought and are necessary for the survival. Examples of this are the contraction of the heart and the peristaltismo, that pushes the food through the digestive system. Voluntary contraction of the skeletal muscles is used to put into motion the body and can finely be controlled. Examples of this are the rude movements of the eyes, or movements, as the muscle quadriceps of the thigh. Two main types of voluntary muscular staple fibres exist: slow contraction and fast contraction. Staple fibres of slow contraction contract for long periods of time, but with little force, while staple fibres of fast contraction contract quickly and with force, but the fatigue very quickly.

The muscles predominantly are moved by the oxidation of fats and carbohydrates, but the anaerobic chemical reactions also are used, mainly for staple fibres of fast contraction. These chemical reactions to produce trifosfato of adenosine (ATP), molecules that are used to feed the movement of the miosina head.

Three types of muscles exist:

• The skeletal muscle or “voluntary muscle” is anchored by the tendons (or aponeuroses in some places) for the bone and is used for effect of movement of the skeleton, such as locomotion and in the maintenance of the position. Although this postural control generally is kept as a subconscious consequence, the responsible muscles to react to the conscientious control as the muscles non-postural. An adult male is composed of 42% of the esquelético muscle and an average adult female is composed of 36% (in percentage of 3 corporal mass).

• smooth muscle or “involuntary muscle” is found inside of the walls of agencies and structures, as the esophagus, stomach, intestines, the bronchis, uterus, uretra, sanguineous bladder, vases, the eretor of the one for and the skin (where it controls the erection of for the ones in the body). In contrast of the skeletal muscle, smooth muscle is not under conscientious control.

• cardiac muscle is also an involuntary muscle “, but it is more similar in structure to the skeletal muscle, and is only found in the heart. Cardiopath and the skeletal muscles “are estriado” in the measure where they contain sarcomerious and conditioned in regimen highly to regulate of packages; smooth muscle does not have none. While the skeletal muscles are made use in regulating, parallel beams, the cardiac muscle if connects the irregular ramification, angles (called intercalated records). estriadas muscular contracts and relax in short and intense, to the step that the smooth muscle supports more, or same contractions almost permanent. ]]> Know Your Body Rohan http://www.fitnesstantra.com/threads/1522-Muscle-amp-it-s-types http://www.fitnesstantra.com/threads/1521-The-muscular-staple-fibers?goto=newpost Sun, 22 Aug 2010 17:01:57 GMT The muscular staple fibres Individual muscular staple fibres are formed during the development of the fusing of some immature undifferentianted... The muscular staple fibres
Individual muscular staple fibres are formed during the development of the fusing of some immature undifferentianted cells known as myoblasts in length, cylindrical, multi-nucleadas cells. Differentiation for this state essentially is concluded before the birth with the cells continues to grow in size later. The skeletal muscle shows a standard of distinct bands when seen under the microscope, which had to the arrangement of the elements of cytoskeletal in the cytoplasm of muscular staple fibres. The proteins are main cytoplasmic miosina and actina (also known as “thick” and “I finish” filaments, respectively) that they are made use in a unit of repetition called sarcomere. The interaction of actin and myosin is responsible for the muscular contraction.

It has two main ways to classify muscular staple fibres: the type of miosina (fast or slow) present, and degree of oxidativa fosforilation that suffers from fiber. The skeletal muscle can thus be divided in two great categories: type I and type II. staple fibres type I appear in red due to presence of the myoglobin protein vinculativa oxygen. These staple fibres are adjusted for the resistance ea fatigue are slow, therefore they use the oxidative metabolism to generate ATP. staple fibres of type II are white, due to absence of myoglobina and glycolytic enzyme dependence. These staple fibres are efficient for small explosions of speed and use of energy and metabolism the oxydative and anaerobic metabolism, depending on the particular subtype. These staple fibres are faster to the fatigue. ]]> Know Your Body Rohan http://www.fitnesstantra.com/threads/1521-The-muscular-staple-fibers http://www.fitnesstantra.com/threads/1520-Hygiene-and-cares-with-the-skin?goto=newpost Sun, 22 Aug 2010 17:00:12 GMT The proper skin supports its ecosystems of microorganisms, including the fermentos and the bacteria, that cannot be removed by one any amount of... The proper skin supports its ecosystems of microorganisms, including the fermentos and the bacteria, that cannot be removed by one any amount of cleanness. Estimates place the individual number of bacteria on the surface of a square shaped count (6,5 centimeters squared) of skin human being in 50 million euros, even so this value vary very in relation to the average of 20 squared feet (1,9 m2) of the skin human being. oily surfaces, as the face, can more than contain 500 million bacteria for square shaped count (6,5 cm ). Although these great amounts, all the bacteria found in the surface of the skin that if incase in a volume of the size of a pea. In general, the microorganisms keep one another one in the verification and are part of a healthful skin. When the counterbalance will be disturbed, can have one overgrowth and an infection, for example, when the antibiotics kill microbes, resulting in an extreme growth of I leaven it. The skin is continuous with the internal epithelial lining of the body in the orifices, each one supports its proper complement of microbes.

Adequate hygiene of the skin is important because the dirty skin favors the development of pathogenic organisms. The cells deceased that continuously get loose of the mixture of the epidermis with secretions of the sweat and glands sebaceous ea dust found in the skin, form a layer filthy in its surface. If washed moved away to the suspension from sweat and sebáceas secretions mixed with dirt and skin deceased it is not decomposed by the bacterial flora, producing an odor fetido. The functions of the skin are disturbed when she is excessively dirty, it becomes more easily damaged, the release of reductions of composites of the antibacterial one, and dirty skin is more inclined to develop infections. [Carece of sources]

The cosmetics must be used with care on the skin, therefore these can cause alergice reactions. Each time demands adjusted clothes to facilitate the evaporation of the sweat. The solar light, the water and air plays an important paper in keeping the healthful skin. ]]> Know Your Body Rohan http://www.fitnesstantra.com/threads/1520-Hygiene-and-cares-with-the-skin http://www.fitnesstantra.com/threads/1519-Skeletal-muscle?goto=newpost Sun, 22 Aug 2010 16:58:31 GMT The skeletal muscle had been categorized in function of its changeable color. Red Staple fibres: Those with high levels of mioglobina and proteins... The skeletal muscle had been categorized in function of its changeable color.

Red Staple fibres: Those with high levels of mioglobina and proteins of oxygen storage had a red appearance. muscular staple fibres Red tend to have mitocondrias more and the sanguineous vases that the whites.
White Fibras: Those with a low text to have a white appearance.
To confuse still more the question skeletal muscular staple fibres also they are classified, depending on its capacity of muscular contraction, in the fast and slow muscular contraction.

Fast Twitch: Some authors define a fiber of fast contraction as that one where the miosina can divide ATP very quickly.
However, staple fibres of fast contraction also demonstrate to greater capacity of electrochemical transmission of the action potentials and a fast level of release and calcium absorption for the sarcoplasmic reticulum. The staple fibres of fast contraction to trust stated period a well developed, short glycolytic system for the energy transference and can contract and develop tension in 2-3 times the staple fibre tax of slow contraction.
Slow Twitch: The slow contraction staple fibres in the long run to generate energy for reverse speed-synthesis of ATP by means of a system of transference of aerobic energy. They tend to have a low level of activity of the ATPase, a lesser speed of contraction, with a developed capacity less glycolytic. They contain great and numerous mitochondria, and with the high levels of myoglobin that them of the one red pigmentaion that has been demonstrated that they have high mitocondriais enzyme concentration, thus, they are resistant the fatigue. ]]> Know Your Body Rohan http://www.fitnesstantra.com/threads/1519-Skeletal-muscle http://www.fitnesstantra.com/threads/1506-Dehydration?goto=newpost Sun, 22 Aug 2010 03:02:38 GMT Dehydration (hypoidratation) is defined as an extreme loss of liquid of the body. It is literally the water removal of an object, however, in... Dehydration (hypoidratation) is defined as an extreme loss of liquid of the body. It is literally the water removal of an object, however, in physiological terms, that a deficiency of liquid in the organism implies.

Three main types of dehydration exist: hipotônica or hiponatremia (mainly loss of electrolytes, sodium in particular), hipertônica or hipernatremia (mainly the loss of water), and isotônicos or isonatremic (loss equal of water and electrolytes). In human beings, the type more comumente seen of dehydration, of far, is isotonice (isonatraemic) dehydration that corresponds effectively with hypovolemia, but the distinction of isotonice of the hypotonice or hypertonice dehydration can be important in the treatment of people who are dehydrated. Physiological dehydration, although the name, does not mean only loss of water, as water and solutos (mainly sodium) are normally lost in approximately equal amounts the form as they exist in the plasma sanguineous. In the hypotonice dehydration, the water changes to intravascular for the extravascular one, exaggerating depletion of volume to intravascular for one definitive amount of loss of total corporal water. The neurological complications can occur in hypertonice states hipo and. The first one can cause convulsions, while second it can take edema cerebral osmotice on the fast rehydrataion.

The symptoms can include migraines similar what it is tried during an undertow, muscular cramps (cramps, especially in the legs), a sudden visual snow episode, reduction of the arterial pressure (hypotenstion), and giddiness or collapses when in foot, due to ortostatice hyipotention. treated dehydration generally does not result in delirium unconsciousness, swell of the language and, in extreme cases, death.

The symptoms of the dehydration generally become visible after 2% of a normal volume of water were lost. Initially, an experience headquarters and discomfort, possibly with appetite loss and dry skin. This can be followed by constipation. The athletes can suffer a loss of performance from up to 30% and redness experience, resistance low, the taxes of sped up heart, the body temperatures high, and fast beginning of fatigue. ]]> Know Your Body Rohan http://www.fitnesstantra.com/threads/1506-Dehydration http://www.fitnesstantra.com/threads/1487-Origin-and-insertion-Serratus-Posterior-Inferior?goto=newpost Sat, 21 Aug 2010 14:22:56 GMT The muscle is in the union of the regions* thoracic* and lumbar. It arises from the T11 vertebrae and it works through superolateral L2 to be... The muscle is in the union of the regions thoracic and lumbar. It arises from the T11 vertebrae and it works through superolateral L2 to be inserted in the inferior edge from the 9 to the 12 of the ribs.
It is located in the confluence of the regions thoracic and lumbar: it is of a quadrilateral form irregular, ampler than the later muscle serratus superior, and separated of her by an ample interval.
Thoracic or three lumbar vertebrae is originated by a thin aponeurosis of superior the thorny supraspinal ligament and two and two apophyses inferior.
When happening oblique upwards and lateralward, one becomes fleshy, and a little beyond their angles is divided in four digitaciones flat, that are inserted in the inferior edges of the four inferior ribs.
The thin aponeurosis of origin intimately is mixed with fascia lumbodorsa, and the aponeurosis of the wide dorsal muscle. ]]> Know Your Body Gourav http://www.fitnesstantra.com/threads/1487-Origin-and-insertion-Serratus-Posterior-Inferior http://www.fitnesstantra.com/threads/1486-Vastus-Lateralis-Muscle?goto=newpost Sat, 21 Aug 2010 14:19:09 GMT Vast the lateral one (vast external) is most of the muscle femoral *quadriceps*. It is originated by an ample aponeurosis, that is enclosed to the... Vast the lateral one (vast external) is most of the muscle femoral quadriceps. It is originated by an ample aponeurosis, that is enclosed to the superior part of the intertrochanteric line, in the edges previous and inferior of greater trochanter, for the lateral lip of the gluteal tuberosity, and superior half of the lateral lip of the rough line, which covers the aponeurosis many fibers superior with three fourth parts of the muscle, and of its deep surface they are originated.

The fibers of an additional one of many problems of the sinew of the Maximus Glutæus, and vast the lateral in term muscular partition between lateral and the short head of the biceps femoral. The fibers form a great fleshy mass, that is enclosed to a strong aponeurosis placed in the deep surface of the inferior part of the muscle: this aponeurosis is contracted and thickening in an inserted flat sinew in the lateral edge of the lozenge, mixing itself with the sinew of the femoral quadriceps, and giving an expansion in the capsule of the joint of the knee. ]]> Know Your Body Gourav http://www.fitnesstantra.com/threads/1486-Vastus-Lateralis-Muscle http://www.fitnesstantra.com/threads/1485-Functions-Rectus-Femoris?goto=newpost Sat, 21 Aug 2010 14:15:44 GMT * Flexion of the hip * Extension of the knee the femoral rectum and sartorius are the only muscles* quadriceps* in the group that are involved...

• Flexion of the hip
• Extension of the knee

the femoral rectum and sartorius are the only muscles quadriceps in the group that are involved in the flexion of the hip, since they are only which they have his origin in pelvis and femur no. When crossing the femoral pelvic joint can act like a handle to flex the leg in the hip.
The femoral rectum is weakest a flexor muscle of the hip when the knee extends because already it is reduced and therefore it suffers of active insufficiency. In essence: the action to raise to a prim leg will contract to more greater iliac, psoas, the tension of fascia broad, and the flexors of the hip rest of which it will be the femoral rectum.
In the same way, the femoral rectum is not dominant in the extension of the knee when flexes the hip, because it is already reduced and therefore it suffers of active insufficiency. In essence: the action of the extension of a section of a seated position, is based fundamentally on vast lateral, vast the medial and vast interval, and less by the femoral rectum.
The femoral rectum is considered a direct antagonist in the sinews. The hamstring are against to the previous rectum of the thigh in the joint of the hip by means of the extension and in the joint of the knee through the flexion. The femoral rectum can be torn in which it can be very painful. ]]> Know Your Body Gourav http://www.fitnesstantra.com/threads/1485-Functions-Rectus-Femoris http://www.fitnesstantra.com/threads/1484-About-mouth-and-mouth-breathing?goto=newpost Sat, 21 Aug 2010 14:13:08 GMT Mouth Saliva The mouth is the first portion of the alimentary canal that receives food and. mucous verbal The is the mucous membrane epithelium... Mouth
Saliva The mouth is the first portion of the alimentary canal that receives food and. mucous verbal The is the mucous membrane epithelium lining the inside of the mouth.
In addition you its primary rolls the beginning of the digestive system, in humans the mouth also plays significant rolls in communication. While primary aspects of the voice ploughs produced in the throat, the tongue, lips, and jaw ploughs also needed you produce the creaks of sounds included in human language. Another non-digestive function of the mouth is its rolls in secondary social sexual and/or activity, such kissing. Physical The appearance of the mouth and lips play part in defining sexual attractiveness.
The mouth is normally moist, and is lined with mucous membrane. The lips mark the transition from mucous membrane you skin, which covers most of the body.

Mouth breathing
Mouth breathing refers you the state of inhaling and exhaling through the mouth.Healthy individual normally breathes through the nose while resting or doing light exercise, and breathes simultaneously through both the nose and mouth during vigorous aerobic exercise, in to order you supply sufficient oxygen.
Excessive mouth breathing is problematic because to air is not filtered and warmed much when inhaled through the nose, it bypasses the nasal paranasal canal and sinuses, and dries out the mouth. Mouth breathing is often associated with congestion, obstruction, or to other abnormalities of to upper respiratory tract. Mouth breathing is diagnostic sign of adenoiditis especially with persistent rhinorrhea. [citation needed] Comorbidities include asthma, obesity, snoring, halitosis, and obstructive sleep apnea. [citation needed] Mouth breathing in children can be causes it of abnormal face growth primarily in to upper and to lower jaw shape, leading you the Long Face Syndrome or to other malocclusions. ]]> Know Your Body Rohan http://www.fitnesstantra.com/threads/1484-About-mouth-and-mouth-breathing http://www.fitnesstantra.com/threads/1481-Origin-And-Insertion-Of-Gluteus-Muscle?goto=newpost Fri, 20 Aug 2010 20:24:16 GMT The greater gluteus maximus (ro gluaeus maximus) is greater and the most superficial one of three gluteal *msuscles*. It constitutes a great part of... The greater gluteus maximus (ro gluaeus maximus) is greater and the most superficial one of three gluteal msuscles. It constitutes a great part of the form and appearance of the gluteal.
One is an ample fleshy and heavy mass of a quadrangular form, and forms the prominence of the rumps.
Its great size is one of the characteristics most characteristic of the muscular system in the human beings, since it is connected with the power to maintain the trunk in the turgid position. Others primates have the rumps much more flat.
The muscle is very heavy in its structure, is made up of fascicles located to each other and reunited in great separated packages by fibrous partitions.
The greater gluteal is a used main muscle in many sports like the volleyball, hockey, basketball, soccer and soccer.
The greater gluteal is the greater one of gluteal muscles and one of strongest muscles in the human body. It is inserted in the iliotibial band and the gluteal tuberosity of femur. Its action consists of extending and rotating the hip laterally, and also to extend the trunk.
exercises of training of the force that know that to increase the greater gluteal significantly they include squat and dead weight. The press of the leg also uses the ]]> Know Your Body Gourav http://www.fitnesstantra.com/threads/1481-Origin-And-Insertion-Of-Gluteus-Muscle http://www.fitnesstantra.com/threads/1480-Gluteus-Maximus-Muscle?goto=newpost Fri, 20 Aug 2010 20:09:11 GMT The greater *gluteus *maximus (or glutaeus maximus) is greater and the most superficial one of three* gluteal muscles*. It constitutes a great part... The greater gluteus maximus (or glutaeus maximus) is greater and the most superficial one of three gluteal muscles. It constitutes a great part of the form and appearance of the gluteal.
One is an ample fleshy and heavy mass of a quadrangular form, and forms the prominence of the rumps.
Its great size is one of the characteristics most characteristic of the muscular system in the human beings, since it is connected with the power to maintain the trunk in the turgid position. Others primates have the rumps much more flat.
The muscle is very heavy in its structure, is made up of fascicles located to each other and reunited in great separated packages by fibrous partitions.
The greater gluteal is a used main muscle in many sports like the volleyball, hockey, basketball, soccer and soccer.
The greater gluteal is the greater one of gluteal muscles and one of strongest muscles in the human body. It is inserted in the iliotibial band and the gluteal tuberosity of femur. Its action consists of extending and rotating the hip laterally, and also to extend the trunk.
exercises of training of the force that know that to increase the greater gluteal significantly they include squat and deadleft weight. The press of the leg also uses the greater gluteal. ]]> Know Your Body Gourav http://www.fitnesstantra.com/threads/1480-Gluteus-Maximus-Muscle http://www.fitnesstantra.com/threads/1479-Functions-amp-Injury-Of-Hamstring?goto=newpost Fri, 20 Aug 2010 20:04:14 GMT The hamstring cross and to act on two joints - the *hip* and the *knee*. Semitendinosus and semimembranosus to extend the hip when the trunk pays... The hamstring cross and to act on two joints - the hip and the knee.
Semitendinosus and semimembranosus to extend the hip when the trunk pays attention, but that also the flexion of the medial knee and (inner) to turn the leg when the knee is doubled.
The long head of the biceps femoral extends the hip like when when beginning to walk; heads to short and long flex the knee and the lateral one (outer) turn the leg when the knee is doubled.
The hamstring to play a crucial role in many daily activities, such as to walk, to run, to jump, and the control of a certain movement in the trunk. When walking, that they are more important as an antagonist of the quadriceps in the deceleration of the extension of the knee.
Effort of the sinew of the arched one, also known as a sinew the arched one, is defined as an excessive stretching or the tear of muscular fibers and related weaves. These injuries are very common in several sports and the phrase common “to be paralyzed” arises from this type of injuries and its potential to leave of side athlete. Hamstring injuries is healthy can arise when the formation of an individual fortifies the quadriceps until the point in which to be outside balance with the sinews of the arched one, reason why a strong contraction in the quadriceps injures the sinews of the arched one. These injuries can put the athletes to the margin of two to six weeks more depending on the gravity of the injury. ]]> Know Your Body Gourav http://www.fitnesstantra.com/threads/1479-Functions-amp-Injury-Of-Hamstring http://www.fitnesstantra.com/threads/1478-Hamstring-Etymology?goto=newpost Fri, 20 Aug 2010 20:00:53 GMT Ham word originally talked about to the* fat* and the muscle behind the knee. Chain talks about to the sinews, and therefore, the hamstring are the... Ham word originally talked about to the fat and the muscle behind the knee. Chain talks about to the sinews, and therefore, the hamstring are the sinews, as in chains to feel to each side of the later part of the knee.
Another origin commonly accepted is that the legs of ham used to be hung of a hook by the space between the bone of the thigh and the sinews of behind the knee. Ham/pig used to be commonest in England than the lamb meat.
The four muscles of the later face of the thigh (semitendinosus, semimembranosus biceps femoral it releases and it cuts the head) flex (curve) of the knee, whereas three of the four to extend (to stretch) the hip. The “three true 'sinews cross the hip and the knee, reason why knee flexion of and extension of the hip participate in. The short head of the biceps femoral crosses a single joint (it rolls) and therefore not included/understood in the extension of the hip. With its origin divergent and innervation sometimes characterization is excluded from the “ hamstring”. ]]> Know Your Body Gourav http://www.fitnesstantra.com/threads/1478-Hamstring-Etymology