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Muscles of Lower Limb.
Origin, insertion, action and nerve.
24
Anatomy
Undergraduate 3
08/13/2012

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Term
Piriformis
Definition
O - anterior sacrum
I- greater trochanter of femur
A - laterally rotates hip
N - nerve to piriformis (L5, S1, S2)
Term
Gluteus Maximus
Definition
O - ilium
I - iliotibial tract
A - laterally rotates hip
N - inferior gluteal nerve
Term
Obturator Internus
Definition
O - obturator foramen
I - greater trochanted of femur
A - laterally rotates hip
N - nerve to obturator internus (L5, S1)
Term
Pectineus
Definition
O - pectineal line of pubis
I - pectineal line of proximal posterior femur
A - adducts and flexes thigh
N - femoral nerve
Term
Tensor Fasciae Latae
Definition
O - iliac crest
I - iliotibial tract
A - abducts, flexes and medially rotates the thigh
N - superior gluteal nerve
Term
Adductor Longus
Definition
O - pubis
I - linea aspera of femur
A - adduct and flex the thigh
N - obturator nerve
Term
Vastus Lateralis
Definition
O - linea aspera of femur
I - tibial tuberosity
A - extends knee
N - femoral nerve
Term
Gluteus Minimus
Definition
O - gluteal lines of ilium
I - greater trochanter of femur
A - abducts hip
N - superior gluteal nerve
Term
Psoas Minor
Definition
O - T12-L1 vertebra
I - iliopubic eminence
A - minor trunk flexion
N - anterior ramus of L1
Term
Rectus Femoris
Definition
O - anterior inferior iliac spine
I - tibial tuberosity
A - extends knee, flexes thigh
N - femoral nerve
Term
Sartorius
Definition
O - anterior superior iliac spine
I - proximal medial tibia
A - flexes and laterally rotates thigh, flexes knee
N - femoral nerve
Term
Iliacus
Definition
O - iliac fossa
I - lesser trochanter of femur
A - flexes thigh
N - femoral nerve
Term
Vastus Intermedius
Definition
O - anterior upper femur
I - tibial tuberosity
A - extends knee
N - femoral nerve
Term
Gluteus Medius
Definition
O - gluteal lines of ilium
I - greater trochanter of femur
A - abducts hip
N - superior gluteal nerve
Term
Biceps Femoris Long Head
Definition
O - ischial tuberosity
I - head of fibula
A - flexes knee, extends thigh
N - tibial nerve
Term
Iliopsoas
Definition
O - when psoas major and iliacus pass under inguinal ligament
I - lesser trochanter of femur
A - flexes thigh
N - femoral nerve
Term
Quadratus Femoris
Definition
O - ischial tuberosity
I - greater trochanter of femur
A - lateral rotation of femur
N - nerve to quadratus femoris (L4-S1)
Term
Adductor Brevis
Definition
O - inferior ramus of pubis
I - linea aspera of femur
A - adducts and flexes thigh
N - obturator nerve
Term
Adductor Magnus
Definition
O - inferior ramus of pubis and ischial tuberosity
I - linea aspera of femur and adductor tubercle of femur
A - adducts and flexes femur
N - obturator nerve
Term
Vastus Medialis
Definition
O - linea aspera of femur
I - tibial tuberosity
A - extends knee
N - femoral nerve
Term
Gemellus Superior
Definition
O - ischial spine
I - greater trochanter of femur
A - laterally rotates hip
N - nerve to obturator internus (S1, S2, S3)
Term
Gemellus Inferior
Definition
O - ischial tuberosity
I - greater trochanter of femur
A - laterally rotates hip
N - nerve to quadratus femoris
Term
Gracialis
Definition
O - inferior ramus of pubis
I - proximal medial tibia
A - adducts thigh and flexes knee
N - obturator nerve
Term
Psoas Major
Definition
O - transverse processes of T12 - L5 vertebra
I - lesser trochanter of femur
A - flexes thigh/trunk
N - lumbar plexus (anterior branches of L1-L3)
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