Muscles Week 11 Lab Flashcards
sartorius
A: abducts thigh
O: anterior superior iliac spine
I: medial aspect of proximal tibia
Nerve Supply: femoral nerve (L2 and L3)
gracilis
A: adducts thigh
O: body of pubis
I: medial surface of tibia
Nerve Supply: obturator nerve (L2 and L3)
semimembranosus
A: extends thigh
O: ischial tuberosity
I: medial condyle of tibia
Nerve Supply: sciatic nerve (L5-S2)
semitendinosus
A: extends thigh
O: ischial tuberosity
I: medial aspect of upper tibial shaft
Nerve Supply: sciatic nerve (L5-S2)
biceps femoris
A: extends thigh
O: ischial tuberosity
I: lateral condyle of tibia
Nerve Supply: sciatic nerve- tibial nerve to long head (L5-S2)
gastrocnemius
A: plantar flexes foot
O: by two heads to medial and lateral condyles of femur
I: posterior calcaneus
Nerve Supply: tibial nerve (S1 and S2)
Soleus
A: plantar flexes foot
O: superior tibia
I: posterior calcaneus
Nerve Supply: Tibial nerve (S1 and S2)
Gluteus Maximus
A: extends thigh
O: dorsal ilium
I: gluteal tuberosity of femur
Nerve Supply: Inferior gluteal nerve (L5-S2)
Gluteus minimus
A: abducts thigh
O: between anterior and inferior lines of external surface of ilium
I: anterior border of greater trochanter of femur
Nerve Supply: superior gluteal nerve (L4-S1)
Extensor digitorum longus
A: extends toes
O: interosseous membrane
I: distal phalanges of toes II-V via extensor expansion
Nerve Supply: deep fibular nerve (L5 and S1)
Flexor digitorum longus
A: flexes toes
O: extensive origin on the posterior tibia
I: distal phalanges of toes II-V
Nerve Supply: tibial nerve (L5-S2)
tibialis anterior
A: dorsiflexion
O: interosseous membrane
I: first metatarsal bone
Nerve Supply: deep fibular nerve (L4 and L5)
fibularis longus
A: plantar flexes
O: head of lateral side of fibula
I: first metatarsal
Nerve Supply: superficial fibular nerve (L5 and S1)
adductor longus
A: adducts thigh
O: pubis near pubic symphysis
I: linea aspera
Nerve Supply: obturator nerve (L2-L4)
