Actions of the muscles

Question 1

Located around each orbit closes eye

Answer 1

Orbicularis

Question 2

retracts and elevates corner of mouth.

Answer 2

Zygomaticus major

Question 3

retracts and elevates upper lip

Answer 3

Zygomaticus minor

Question 4

elevates mandible and closes jaw.

Answer 4

Masseter

Question 5

elevates upper eyelid

Answer 5

Levator palpebrae superiors

Question 6

flex the neck

Answer 6

Sternocleidomastoid

Question 7

lateral flexion of neck elevates ribs 1 and 2

Answer 7

scalene

Question 8

contraction expands thoracic cavity and compresses abdominopelvic cavity.

Answer 8

Diaphragm

Question 9

elevates the ribs

Answer 9

external intercostals

Question 10

depresses the ribs

Answer 10

internal intercostals

Question 11

extension and lateral flexion of vertebral column and head

Answer 11

erector spinae group

Question 12

compresses abdomen, depresses ribs, flexes vertebral column.

Answer 12

Rectus abdominis(3)

Question 13

flexes spine, depresses ribs, compresses abdomen.

Answer 13

external oblique

Question 14

flexes spine, depresses ribs, compresses abdomen.

Answer 14

internal oblique

Question 15

compresses abdomen.

Answer 15

Transverse abdominis

Question 16

elevates or rotates scapula upward, elevate clavicle, extend neck.

Answer 16

Trapezius(3)

Question 17

adducts scapula and performs downward rotation.

Answer 17

Rhomboid major

Question 18

adducts scapula and performs downward rotation.

Answer 18

Rhomboid minor

Question 19

extension,adduction,medial rotation at shoulder

Answer 19

Latissimus dorsi(3)

Question 20

flexion, medial rotation, adduction at shoulder

Answer 20

Pectoralis major

Question 21

adduction at shoulder

Answer 21

Supraspinatus

Question 22

lateral rotation at shoulder

Answer 22

infraspinatus

Question 23

iflexion at elbow and shoulder, supination of forearm

Answer 23

biceps brachi

Question 24

flexion at elbow

Answer 24

brachioradialis

Question 25

supination of the forearm

Answer 25

supinator

Question 26

pronation of the forearm

Answer 26

pronator quadrates

Question 27

extension and lateral rotation at hip

Answer 27

Gluteus maximus

Question 28

abduction and medial rotation at hip

Answer 28

gluteus Medius

Question 29

lateral rotation and abduction at hip

Answer 29

piriformis

Question 30

flexion at hip

Answer 30

Iliopsoas group-iliacus

Question 31

extension at knee flexion hip

Answer 31

Rectus femoris

Question 32

extension of knee

Answer 32

Vastus lateralis

Question 33

extension of knee

Answer 33

Vastus intermedias

Question 34

adduction,flexion,medial rotation at hip

Answer 34

Adductor longus

Question 35

flexion at knee, adduction and medial rotation at hip

Answer 35

Gracilis

Question 36

extension and lateral rotation at hip, flexion at knee

Answer 36

biceps femoris

Question 37

flexion at knee, extension at ankle, inversion of foot

Answer 37

gastrocnemius