muscle origin, insertion, action

Question 1

orbicularis oculi action

Answer 1

closes eye, draws eyebrows inferiorly

Question 2

orbicularis oris action

Answer 2

closes lips, purses and protrudes lips

Question 3

zygomaticus major action

Answer 3

raises lateral corners of mouth upwards

Question 4

buccinator action

Answer 4

compresses cheek

Question 5

masseter action

Answer 5

elevates mandible

Question 6

frontalis action

Answer 6

raises eyebrows, fixes aponeurosis and pulls scalp posteriorly

Question 7

temporalis action

Answer 7

elevates and retracts mandible

Question 8

scalenes action

Answer 8

elevate ribs 1-2

Question 9

sternocleidomastoid action

Answer 9

flexion of neck, rotate head toward shoulder

Question 10

external intercostals action

Answer 10

pulls ribs toward one another to elevate rib cage

Question 11

Internal intercostals action

Answer 11

Draws ribs together to depress rib cage

Question 12

Diaphragm

Answer 12

Prime mover of inspiration flattens on contraction

Question 13

Pectoralis major

Answer 13

Prime mover of arm flexion; addicts, medially rotates arm

Question 14

Serratus anterior

Answer 14

Prime mover to protract and hold scapula against chest wall; rotates scapula

Question 15

Trapezius

Answer 15

Raises, rotates, and addicts scapula and stabilizes it

Question 16

Rhomboid major

Answer 16

Stabilizes scapulae

Question 17

Latissimus dorsi

Answer 17

Prime mover of arm extension

Question 18

External oblique

Answer 18

Flexes the vertebral column, compresses abdominal wall, trunk rotation and lateral flexion

Question 19

Internal oblique

Answer 19

Flexes the vertebral column compresses abdominal wall, trunk rotation, and lateral flexion

Question 20

Transverse abdominis

Answer 20

Compresses abdominal contents

Question 21

Rectus abdominis

Answer 21

Flexes the vertebral column

Question 22

Deltoid

Answer 22

Prime mover of arm abduction

Question 23

Biceps brachii

Answer 23

Flexion and supination of forearm

Question 24

Triceps brachii

Answer 24

Powerful forearm extensor

Question 25

Flexor carpi radialis

Answer 25

Powerful flexor and abductor of the hand

Question 26

Flexor carpi ulnaris

Answer 26

Flexes and adducts hand

Question 27

Palmaris longus

Answer 27

Tenses skin und fascia of palm

Question 28

Extensor carpi radialis

Answer 28

Extends and abducts hand

Question 29

Extensor carpi ulnaris

Answer 29

Extends and adducts hand

Question 30

Gluteus Maximus

Answer 30

Powerful thigh extension

Question 31

Tensor fascia latea

Answer 31

Flexes, abducts, and medically rotates thigh,

Question 32

Gracilis

Answer 32

Adducts thigh; flexes and medially rotates leg

Question 33

Sartorious

Answer 33

Flexes, abducts, and laterally rotates thigh; flexes leg

Question 34

Biceps femurs

Answer 34

Extends thigh; flexes leg

Question 35

Semitendinosus

Answer 35

Extends thigh; flexes leg

Question 36

Semimembranosus

Answer 36

Extends thigh; flexes leg

Question 37

Rectus femoris

Answer 37

Extends leg and flexes thigh

Question 38

Vastus lateralis

Answer 38

Extends leg and stabilizes knee

Question 39

Vastus medialis

Answer 39

Extends leg; stabilizes patella

Question 40

Vastas intermedium

Answer 40

Extends leg

Question 41

Tibialis anterior

Answer 41

Prime mover of dorsiflexion

Question 42

Extensor digitorum longus

Answer 42

Prime mover of toe extension

Question 43

Gastrocnemius

Answer 43

Plantar flexes foot

Question 44

Soleus

Answer 44

Plantar flexion

Question 45

Fibularis (peroneus) longus

Answer 45

Plantar flexes and everts foot

Question 46

extensor digitorum

Answer 46

Prime mover of finger extension