Thigh

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Thigh
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Anatomy Of TheThigh

• The thighs are composed of numerous muscles
  including the quadriceps (rectus femoris, rectus
  medialis, rectus lateralis, and rectus
  intermedialis). These muscles extend the knee and
  (rectus femoris only) help to flex the hip.
• The thighs also are made up of the hamstring
  muscles (biceps femoris, semitendinosus, and
  semimembranosus). These muscles help to flex the
  knee joint. Also included in the leg group are
  the adductor muscles, the abductor muscles, the
  glutes, gracillus, and sartorius.

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Hamstrings

• are actually comprised of three separate muscles
  the Biceps Femoris, Semitendinosus and
  Semimembranosus.
• These muscles originate just underneath the
  Gluteus Maximus on the pelvic bone and attach on
  the tibia.
• The Hamstrings are primarily fast-twitch muscles,
  responding to low reps and powerful movements.

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• primary functions of the Hamstrings are knee
  flexion (bringing the heel towards the buttocks)
  and hip extension (moving the leg to the rear).
• Semitendinosus and Semimembranosus also known as
  the medial hamstrings. They cross the hip and the
  knee joint and are therefore involved in
  extending the hip and flexing the knee. They also
  assist in turning the knee inward (medial
  rotation).
• Biceps Femoris also known as the leg biceps.
  Similar to it's cousin, the biceps brachii, as
  well as it's name suggests, the biceps femoris
  consists of two heads the long and the short
  head. The long head crosses both the hip and the
  knee joint and is involved in extending the hip
  and flexing the knee. The short head only crosses
  the knee joint and is only involved in flexing
  the knee. Both heads assist in turning the foot
  outward (lateral rotation of the knee)

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Posterior Thigh
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Leg Curls Straight Leg Deadlifts
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The quadriceps femoris (quadriceps extensor, or
quads)

• includes the four muscles on the front of the
  thigh. It is the great extensor muscle of the
  leg, forming a large fleshy mass which covers the
  front and sides of the femur.
• It is subdivided into separate portions, which
  have distinctive names.
• the middle muscle is the rectus femoris.
• The other three lie in immediate connection with
  the body of the femur, which they cover from the
  trochanters to the condyles
• The muscle on the lateral side of the femur is
  termed the vastus lateralis.
• The muscle covering the medial side is termed the
  vastus medialis.
• The muscle in front is termed the vastus
  intermedius.

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Anterior Thigh
The quadriceps main function is to extend the leg
at the knee.  This occurs during activities such
as running, jumping, kicking and walking.
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•   Squat   Lunges   Leg Extension   Leg Press
    Quadricep stretch

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abductor muscles

• a group of four muscles located in the buttocks
  region on both sides of the body.  Their names
  are 1) Gluteus Maximus, 2) Gluteus Medius, 3)
  Gluteus Minimus, and 4) Tensor Fascia Lata

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Abductor Function

• to abduct or separate your legs away from the
  midline of the body.  This occurs during any
  athletic movement requiring you to move from side
  to side such as playing the infield in baseball,
  defense in basketball and football, and ice
  skating.

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Sartorius/Gracilis
Sartorius is a strap muscle which runs obliquely
across the front of the thigh. It is the longest
muscle in the body. It runs from the anterior
superior iliac spine to the medial surface of the
shaft of the tibia Sartorius flexes both the hip
and knee joints and laterally rotates the
thighwhen these movements are carried out
simultaneously in both limbs, a cross-legged
position will result (sartor a tailor).
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Gracilis is the most superficial muscle on the
medial side of the thigh. It is thin and
flattened, broad above, narrow and tapering
below. It arises by a thin aponeurosis from the
anterior margins of the lower half of the
symphysis pubis and the upper half of the pubic
arch. The fibers run vertically downward, and end
in a rounded tendon, which passes behind the
medial condyle of the femur, curves around the
medial condyle of the tibia, where it becomes
flattened, and is inserted into the upper part of
the medial surface of the body of the tibia,
below the condyle.
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Adductor Muscles adductor brevis, adductor
longus, adductor magnus, pectineus, and gracilis
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