Group 1 Human Muscles

Question 1

Pectoralis major, origin

Answer 1

Sternum, clavicle, ribs 1-6

Question 2

Pectoralis major, insertion

Answer 2

Proximal humerus

Question 3

Pectoralis major, primary actions

Answer 3

Adducts and flexes humerus

Question 4

Trapezius, origin

Answer 4

Occipital bone and all cervical and thoracic vertebrae

Question 5

Trapezius, insertion

Answer 5

Scapular spine and clavicle

Question 6

Trapezius, primary actions

Answer 6

Raises, retracts, and rotates scapula

Question 7

Latissimus dorsi, origin

Answer 7

Lower spine and ilac crest

Question 8

Latissimus dorsi, insertion

Answer 8

Proximal humerus

Question 9

Latissimus dorsi, primary actions

Answer 9

Extends and adducts humerus

Question 10

Biceps brachii, origin

Answer 10

Scapula of shoulder girdle

Question 11

Biceps brachii, insertion

Answer 11

Proximal radius

Question 12

Biceps brachii, primary actions

Answer 12

Flexes elbow and supinates forearm

Question 13

Triceps brachii, origin

Answer 13

Shoulder girdle and proximal humerus

Question 14

Triceps brachii, insertion

Answer 14

Olecranon process of ulna

Question 15

Triceps brachii, primary actions

Answer 15

Extends elbow

Question 16

Masseter, origin

Answer 16

Temporal bone

Question 17

Masseter, insertion

Answer 17

Mandible

Question 18

Masseter, primary actions

Answer 18

Closes jaw

Question 19

Sternocleidomastoid, origin

Answer 19

Sternum and clavicle

Question 20

Sternocleidomastoid, insertion

Answer 20

Temporal bone, mastoid process

Question 21

Sternocleidomastoid, primary actions

Answer 21

Flexes neck, laterally rotates head