Anterior muscles Lab

Question 1

Sternocleidomastoid

Answer 1

head rotation to opposite side, elevates ribs during forced inhalation

Question 2

Scalenes

Answer 2

lateral neck flexion, elevates ribs during forced inhalation

Question 3

pectoralis major

Answer 3

flexion and adduction of shoulder

Question 4

pectoralis minor

Answer 4

protraction of scapula

Question 5

external intercostals

Answer 5

elevates and expands ribs during inhalation

Question 6

external oblique

Answer 6

compression, rotation, and lateral flexion of core

Question 7

internal oblique

Answer 7

compression, rotation and lateral flexion of core

Question 8

rectus abdominus

Answer 8

compression and flexion of core

Question 9

biceps brachii

Answer 9

flexion of elbow and supination of forearm

Question 10

brachialis

Answer 10

elbow flexion

Question 11

coracobrachialis

Answer 11

flexion and adduction of shoulder

Question 12

brachioradialis

Answer 12

elbow flexion

Question 13

extensor carpi radialis

Answer 13

extension and radial deviation of wrist

Question 14

extensor digitorum

Answer 14

extension of phalanges 2-5

Question 15

extensor carpi ulnaris

Answer 15

extension and ulnar deviation of wrist

Question 16

sartorius

Answer 16

hip flexion and knee flexion

Question 17

rectus femoris

Answer 17

hip flexion and knee extension

Question 18

vastus lateralis

Answer 18

knee extension

Question 19

vastus medialis

Answer 19

knee extension

Question 20

vastus intermedius

Answer 20

knee extension

Question 21

gracilis

Answer 21

hip adduction and knee flexion

Question 22

adductor longus

Answer 22

hip adduction

Question 23

tibialis anterior

Answer 23

dorsiflexion and inversion of ankle

Question 24

muscles belonging to “abdominals”

Answer 24

external oblique, internal oblique, rectus abdominus

Question 25

muscles belonging to “arms”

Answer 25

biceps brachii, brachialis, coracobrachialis, brachioradialis

Question 26

muscles belonging to “forearm”

Answer 26

extensor carpi radialis, extensor digitorum, extensor carpi ulnaris

Question 27

muscles belonging to “quadriceps”

Answer 27

rectus femoris, vastus lateralis, vastus medialis, vastus intermedius

Question 28

origin and insertion of sternocleidomastoid

Answer 28

origin: manubrium of sternum and adjacent clavicleinsertion: mastoid process of temporal bone

Question 29

origin and insertion of pectoralis minor

Answer 29

origin: ribs 2-5insertion: coracoid process of scapula

Question 30

origin and insertion of external intercostals

Answer 30

origin: inferior border of rib aboveinsertion: superior border of rib below

Question 31

origin and insertion of rectus abdominus

Answer 31

origin: superior pubic ramus and symphasis pubisinsertion: xiphoid process of sternum and costal cartilages 5-7

Question 32

origin and insertion of brachialis

Answer 32

origin: distal half of anterior humerusinsertion: coronoid process of ulna

Question 33

origin and insertion of flexor carpi radialis

Answer 33

origin: medial epicondyle of humerusinsertion: base of 2nd and 3rd metacarpals

Question 34

origin and insertion of extensor carpi ulnaris

Answer 34

origin: lateral epicondyle of humerus and posterior ulnainsertion: 5th metacarpal

Question 35

origin and insertion of vastus lateralis

Answer 35

origin: greater trochanter and linea aspera of femurinsertion: tibial tuberosity

Question 36

origin and insertion of adductor longus

Answer 36

origin: superior pubic ramusinsertion: linea aspera of femur