Muscles Identification Days 4 and 5 Rectus Femoris Origintop of
acetabulum Insertiontibial tuberosity by way of patellar ligament
Action extends knee Gluteus maximus Originilium and dorsal sacrum
and coccyx Insertiongluteal tuberosity of femur Actionflexes thigh
Sternocleidomastoid Originmanubrium of sternum and medial third of
clavicle Insertionmastoid process Action no muscle if individually
contracted BackSide Front Deltoid Origin scapular spine and lateral
third of clavicle Insertiondeltoid tuberosity of humerus Action arm
abductor (pulls arm up sideways) Extensor digitorum Originlateral
epicondyle of humerus Insertionby 4 tendons into distal phalanges
of fingers 2-5 Action extends fingers and wrist Sartorius
Originanterior superior iliac spine Insertionmedial aspect of
proximal tibia Actionhelps you sit cross-legged Gastrocnemius
Originmedial and lateral epicondyles of femur Insertioncalcaneus by
achilles tendon Action plantar flexes foot Tibialis anterior
Originlateral condyle and upper 2/3 of lateral tibia
Insertionbehind big toe Action dorsiflexes foot Vastus intermedius
Originanterior surface of proximal femur Insertiontibial tuberosity
by way of patellar ligament Action extends knee Vastus medialis
Originmedial proximal femur Insertiontibial tuberosity by way of
patellar ligament Action extends knees Vastus lateralis Origin
lateral proximal femur Insertiontibial tuberosity by way of
patellar ligament Action extends knee
