Lower Limb Muscles Flashcards
Psoas major
Anterior rami L1-L3
Lumbar branches of iliolumbar artery
Flexes the thigh at the hip joint
Iliacus
Femoral nerve L2-L3
Lumbar branches of iliolumbar artery
Flexes the thigh at the hip joint
Vastus Medialis
Femoral nerve L2-L4
Femoral artery, deep femoral artery
Extends the leg at the knee joint
Vastus Intermedius
Femoral nerve L2-L4
Lateral circumflex femoral artery, deep femoral artery
Extends the leg at the knee joint
Vastus lateralis
Femoral nerve L2-L4
Lateral circumflex femoral artery, deep femoral artery
Extends the leg at the knee joint
Rectus Femoris
Femoral nerve L2-L4
Lateral circumflex femoral artery, deep femoral artery
Flexes the thigh at the hip joint and extends the leg at the knee joint
Sartorious
Femoral nerve L2-L3
Femoral artery
Flexes the thigh at the hip joint and flexes the leg at the knee joint
Gracilis
Obturator Nerve L2-L3
Deep femoral artery, medial circumflex femoral artery
Adducts thigh at hip joint and flexes leg at knee joint
Pectineus
Femoral Nerve L2-L3
Medial circumflex femoral artery, obturator artery
Adducts and flexes thigh at hip joint
Adductor Longus
Obturator Nerve (anterior division) L2-L4
Medial circumflex femoral artery, obturator artery
Adduct and medially rotates thigh at hip joint
Adductor Brevis
Obturator Nerve L2-L3
Medial circumflex femoral artery, obturator artery
Adducts thigh at hip point
Adductor Magnus - adductor part
Obturator Nerve L2-L4
Deep femoral artery, popliteal artery, obturator
Adducts and medially rotates thigh at hip joint
Adductor Magnus - hamstring part
Sciatic Nerve (tibial division) L2-L4
Deep femoral artery, popliteal artery, obturator
Extends thigh
Obturator Externus
Obturator Nerve (posterior division) L3-L4
Medial circumflex femoral artery, obturator artery
Laterally rotates thigh at hip joint
Piriformis
Branch from L5, S1, S2 (Grays’s says “Nerve to the Piriformis” from S1 to S2)
Superior and inferior gluteal arteries, internal pudendal artery
Laterally rotates extended femur at hip joint; abducts flexed femur at hip joint
Obturator Internus
Nerve to obturator internus (L5, S1)
Internal pudendal and superior gluteal arteries
Laterally rotates extended femur at hip joint; abducts flexed femur at hip joint
Gemellus Superior
Nerve to obturator internus (L5, S1)
Inferior gluteal artery
Laterally rotates extended femur at hip joint; abducts flexed femur at hip joint
Gemellus Inferior
Nerve to quadratis internus (L5, S1)
Inferior gluteal artery
Laterally rotates extended femur at hip joint; abducts flexed femur at hip joint
Quadratus Femoris
Nerve to quadratis internus (L5, S1)
Medial circumflex femoral artery
Laterally rotates femur at hip joint
Gluteus Minimus
Superior Gluteal Nerve (L4, L5, S1)
Deep branch of superior gluteal artery
Abducts femur at hip joint; holds pelvis secure over stance leg and prevents pelvic drop on the opposite swing side during walking; medially rotates thigh
Gluteus Medius
Superior Gluteal Nerve (L4, L5, S1)
Deep branch of superior gluteal artery
Abducts femur at hip joint; holds pelvis secure over stance leg and prevents pelvic drop on the opposite swing side during walking; medially rotates thigh
Gluteus Maximus
Inferior Gluteal Nerve (L5, S1, S2)
Superior and inferior gluteal arteries, first perforating branch of deep femoral artery
Powerful extensor of flexed femur at hip joint; lateral stabilizer of hip joint and knee joint; laterally rotates and abducts thigh
Tensor Fasciae Latae
Superior Gluteal Nerve (L4, L5, S1)
Superior gluteal arteries, lateral circumflex femoral artery
Stabilizes the knee in extension
Biceps Femoris
Sciatic Nerve (Tibial Nerve)
Perforating branch of deep artery of thigh (Femoral Branch), superior muscular branches of popliteal artery
Flexes leg at knee joint; extends and laterally rotates thigh at hip joint and laterally rotates leg at knee joint
