lab 6 a/o/i's: myology- superficial & dorsal & ventral hind limb

what muscles fall under the anterior and medial hip group?

ilioposas (iliacus, psoas major), sartorius

ilioposas (iliacus, psoas major)

action- flexion of thigh

origin- iliac fossa, ala of sacrum, and vertebrae (T12-L5)

insertion- lesser trochanter (femur)

sartorius

action- flexion of thigh and lateral rotation of femur

origin- anterior superior iliac spine

insertion- proximal shaft of tibia

what muscles fall under the medial thigh group?

adductor magnus, obturator externus, adductor longus and brevis, pectineus, gracilis

adductor magnus

action- adduction and extension of thigh

origin- pubis and ischium

insertion- gluteal tuberosity and linea aspera (femur)

obturator externus

action- lateral rotation of thigh

origin- inferior edge of obturator foramen

insertion- greater trochanter of femur

adductor longus and brevis

action- adduction of thigh

origin- body and inferior ramus (pubis)

insertion- linea aspera

pectineus

action- adducts, flexes, and medially rotates thigh

origin- body and ramus of the pubis

insertion- proximal shaft of femurf

gracilis

action- adduction of thigh; flexion of leg

origin- body and ramus of pubis

insertion- proximal shaft of tibia

what muscles fall under the anterior thigh group?

rectus femoris (quadriceps), vastus lateralis (quadriceps), vastus medialis (quadriceps), vastus intermedius (quadriceps), tensor fasciae latae

rectus femoris (quadriceps)

action- extension of leg; flexion of thigh

origin- anterior inferior iliac spine

insertion- patella and tibial tuberosity

vastus lateralis (quadriceps)

action- extension of leg

origin- greater trochanter (femur)

insertion- patella and tibial tuberosity

vastus medialis (quadriceps)

action- extension of leg

origin- intertrochanteric line and linea aspera (femur)

insertion- patella and tibial tuberosity

vastus intermedius (quadriceps)

action- extension of leg

origin- anterolateral shaft of femur

insertion- patella and tibial tuberosity

tenor fasciae latae

action- flexion, abduction, and medial rotation of thigh

origin- anterior superior iliac spine

insertion- iliotibial tract

what muscles fall under the gluteal muscle group

gluteus medius, gluteus maximus

gluteus medius

action- abduction of thigh

origin- ala (ilium)

insertion- greater trochanter (femur)

gluteus maximus

action- extension, lateral rotation, and abduction of thigh

origin- ala (ilium), scarum, coccyx

insertion- gluteal tuberosity (femur)

what muscles fall under the posterior thigh group?

biceps femoris (hamstrings), semitendinosus, semimembranosis

biceps femoris (hamstring)

action- flexion of leg, extension of thigh

origin- ischial tuberosity

insertion- head of fibula

semitendinosus

action- flexion of leg, extension of thigh

origin- ischial tuberosity

insertion- proximal shaft

semimembranosus

action- flexion of leg, extension of thigh

origin- ischial tuberosity

insertion- medial condyle (tibia)

what muscles fall under the anterior lower leg group?

tibialis anterior, extensor digitorum longus, extensor hallucis longus, fibularis (peroneus) tertius

tibialis anterior

action- dorsiflexes and inverts foot

origin- lateral condyle shaft (tibia); interosseus membrane

insertion- metatarsal 1; medial cuneiform

extensor digitorum longus

action- extension of toes II-V; dorsiflexion and eversion of foot

origin- lateral condyle shaft (tibia); interosseus membrane 

insertion- distal phalanges II-V

extensor hallucis longus

action- extension of great toe; dorsiflexion and inversion of foot

origin- fibula; interosseus membrane

insertion- distal phalanx of great toe

fibularis (peroneus) tertius

action- dorsiflexion and eversion of the foot

origin- fibula; interosseus membrane

insertion- metatarsal V

what muscles fall under the lateral lower leg group?

fibularis (peroneus) brevis, fibularis (peroneus) longusfi

fibularis (peroneus) brevis

action- plantar flexion and eversion of foot

origin- distal shaft of fibula

insertion- metatarsal V

fibularis (peroneus) longus

action- plantar flexion and eversion of foot

origin- proximal shaft of fibula

insertion- metatarsal I; medial cuneiform

what muscles are part of the posterior superficial lower leg group?

gastrocnemius (medial and lateral head), plantaris, soleus

gastrocnemius (medial and lateral head)

action- plantar flexion of foot and flexion of leg

origin- medial and lateral condyles (femur)

insertion- calcaneus

plantaris

action- plantar flexion of foot; flexion of leg

origin- distal shaft of femur

insertion- calcaneus

soleus

action- plantar flexion of foot

origin- proximal shafts of tibia and fibula

insertion- calcaneus

what muscles fall under the posterior deep lower leg group?

flexor digitorum longus and flexor hallucis longus

flexor digitorum longus

action- plantar flexion and inversion of foor; flexion of toes II-V

origin- mid shaft of tibia

insertion- distal phalanges II-V

flexor hallucis longus

action- plantar flexion and inversion of foot; flexion of great toe

origin- posterior shaft of fibula; interosseus membrane

insertion- distal phalange of great toe