Muscle Origin/Insertions/Function

Question 1

triceps brachii

Answer 1

origin: scapula, proximal humerus
insertion: olecranon of ulna
action: extends elbow

Question 2

biceps brachii

Answer 2

origin: scapula (glenoid and coracoid process)
insertion: proximal radius
action: flexes elbow, supinates forearm

Question 3

brachialis

Answer 3

origin: distal humerus
insertion: proximal ulna
action: flexes elbow

Question 4

biceps femoris

Answer 4

origin: pelvis (ischial tuberosity & part of femur)
insertion: head of fibula, lateral condyle of tibia
action: flexes knee joint, extends hip

Question 5

semitendinosus

Answer 5

origin: pelvis (ischial tuberosity)
insertion: proximal end of tibia
action: flexes knee, extends hip

Question 6

semimembranosus

Answer 6

origin: pelvis (ischial tuberosity)
insertion: proximal end of tibia
action: flexes knee, extends hip

Question 7

rectus femoris

Answer 7

origin: pelvis
insertion: patella, tibial tuberosity via patellar ligament
action: extends knee, flexes hip on thigh

Question 8

vastus lateralis, medialis, and intermedius

Answer 8

origin: femur
insertion:patella, tibial tuberosity via patellar ligament
action: extends knee