Download Muscles to ID Part 2

Muscles Identification
Days 4 and 5
Rectus Femoris
• Origin top of acetabulum
• Insertion
tibial tuberosity by way of
patellar ligament
• Action extends knee
Gluteus maximus
• Origin ilium and dorsal sacrum and coccyx
• Insertion
gluteal tuberosity of femur
• Action flexes thigh
Sternocleidomastoid
• Origin manubrium of sternum and medial
third of clavicle
• Insertion
mastoid process
• Action “no” muscle if individually contracted
Back
Side
Front
Deltoid
• Origin scapular spine and lateral third of
clavicle
• Insertion
deltoid tuberosity of humerus
• Action
arm abductor (pulls arm up sideways)
Extensor digitorum
• Origin lateral epicondyle of humerus
• Insertion
by 4 tendons into distal
phalanges of fingers 2-5
• Action extends fingers and wrist
Sartorius
• Origin anterior superior iliac spine
• Insertion
medial aspect of proximal tibia
• Action helps you sit cross-legged
Gastrocnemius
• Origin
medial and lateral epicondyles of
femur
• Insertion
calcaneus by achilles tendon
• Action plantar flexes foot
Tibialis anterior
• Origin
lateral condyle and upper 2/3 of
lateral tibia
• Insertion
behind big toe
• Action dorsiflexes foot
Vastus intermedius
• Origin anterior surface of proximal femur
• Insertion
tibial tuberosity by way of
patellar ligament
• Action extends knee
Vastus medialis
• Origin medial proximal femur
• Insertion
tibial tuberosity by way of
patellar ligament
• Action extends knees
Vastus lateralis
• Origin lateral proximal femur
• Insertion
tibial tuberosity by way of
patellar ligament
• Action extends knee