Muscle ID, etc.

Question 1

What’s the action of the frontalis?

Answer 1

elevates the eyebrows

Question 2

What’s the action of the temporalis?

Answer 2

closes jaws by elevating mandible

Question 3

What’s the action of the orbicularis oculi?

Answer 3

contracts individually around the eye (blinking, winking, squinting)

Question 4

What’s the action of the orbicularis oris?

Answer 4

closes, purses, and protrudes the lips

Question 5

What’s the action of the masseter?

Answer 5

agonist in elevating the mandible

Question 6

What’s the action of the risorius?

Answer 6

draws angle of the mouth laterally

Question 7

What’s the action of the modiolus?

Answer 7

point of muscle origins and insertions

Question 8

What’s the action of the buccinator?

Answer 8

retraction of the mandible

Question 9

What’s the action of the digastric?

Answer 9

open mouth; depress mandible; elevate hyoid

Question 10

What’s the action of the stylohyoid?

Answer 10

elevates and retracts hyoid

Question 11

What’s the action of the mylohyoid?

Answer 11

elevates hyoid and floor of mouth

Question 12

What’s the action of the platysma?

Answer 12

depresses mandible; pulls down lower lip; tenses neck skin

Question 13

What’s the action of the sternohyoid?

Answer 13

depresses hyoid

Question 14

What’s the action of the sternocleidomastoid?

Answer 14

head and neck flexion; rotation of the head

Question 15

Identify this muscle.

Answer 15

Frontalis

Question 16

Identify this muscle.

Answer 16

temporalis

Question 17

Identify this muscle.

Answer 17

orbicularis oculi

Question 18

Identify this muscle.

Answer 18

orbicularis oris

Question 19

Identify this muscle.

Answer 19

masseter

Question 20

Identify this muscle.

Answer 20

risorius

Question 21

Identify this muscle.

Answer 21

buccinator

Question 22

Identify this muscle.

Answer 22

digastric

Question 23

Identify this muscle.

Answer 23

stylohyoid

Question 24

Identify this muscle.

Answer 24

mylohyoid

Question 25

Identify this muscle.

Answer 25

platysma

Question 26

Identify this muscle.

Answer 26

sternohyoid

Question 27

Identify this muscle.

Answer 27

sternocleidomastoid

Question 28

What's the action of the scalenes?

Answer 28

ipsilateral flexion or contralateral rotation of the head; elvates ribs

Question 29

What's the action of the trapezius?

Answer 29

laterally flexes neck; elevate, depress, retract, and laterally rotate scapula

Question 30

What's the action of the pectoralis major?

Answer 30

agonist in flexion, adduction and medial rotation of the humerus; synergist in forced inspiration

Question 31

What's the action of the pectoralis minor?

Answer 31

syngergist in scapula protraction, abduction and raising of arm

Question 32

What's the action of the serratus anterior?

Answer 32

prime mover to protract scapula, abduction and raising of arm (punching); "boxer's muscle"

Question 33

What's the action of the supraspinatus?

Answer 33

abduction of arm; stabilizes shoulder

Question 34

What's the action of the infraspinatus?

Answer 34

rotates humerus laterally; stabilzes shoulder

Question 35

What's the action of the teres minor?

Answer 35

rotates humerus laterally; stabilzes shoulder

Question 36

What's the action of the subscapularis?

Answer 36

rotates humerus medially; stabilizes shoulder

Question 37

Which four muscles comprise the rotator cuff (RTC)?

Answer 37

supraspinatus, infraspinatus, teres minor, subscapularis

Question 38

What's the action of the deltoid?

Answer 38

agonist in arm abduction, flexion and medial rotation of humerus

Question 39

What's the action of the teres major?

Answer 39

medially rotates and adducts the humerus; synergist of latissumus dorsi

Question 40

What's the action of the coracobrachialis?

Answer 40

flexes and medially rotates the arm

Question 41

What's the action of the latissimus dorsi?

Answer 41

adducts and extends arm; depresses scapula

Question 42

Identify this muscle.

Answer 42

Scalenes

Question 43

Identify this muscle.

Answer 43

Trapezius

Question 44

Identify this muscle.

Answer 44

Pectoralis major

Question 45

Identify this muscle.

Answer 45

Pectoralis minor

Question 46

Identify this muscle.

Answer 46

Serratus anterior

Question 47

Identify this muscle.

Answer 47

Supraspinatus

Question 48

Identify this muscle.

Answer 48

Infraspinatus

Question 49

Identify this muscle.

Answer 49

Teres minor

Question 50

Identify this muscle.

Answer 50

Subscapularis

Question 51

Identify this muscle.

Answer 51

Deltoid

Question 52

Identify this muscle.

Answer 52

Teres major

Question 53

Identify this muscle (3).

Answer 53

Coracobrachialis

Question 54

Identify this muscle.

Answer 54

latissimus dorsi

Question 55

What's the action of the external intercostals?

Answer 55

elevates rib cage during inhalation

Question 56

What's the action of the internal intercostals?

Answer 56

elevates rib cage during inhalation; depresses rib cage during forced exhalation

Question 57

What's the action of the diaphragm?

Answer 57

agonist of inspiration; flattens to increase thoracic volume

Question 58

What's the action of the external oblique?

Answer 58

aids in flexion of the vertebral column; trunk rotation

Question 59

What's the action of the internal oblique?

Answer 59

aids in flexion of the vertebral column; trunk rotation

Question 60

What's the action of the transverse abdominus?

Answer 60

compresses abdomen

Question 61

What's the action of the rectus abdominus?

Answer 61

flexes lumbar region

Question 62

What's the action of the linea alba?

Answer 62

separates rectus abdominus; insertion point of transverse abdominus

Question 63

What's the action of the brachialis?

Answer 63

agonist of forearm flexion

Question 64

What's the action of the biceps brachii?

Answer 64

synergist of elbow flexion; supination of forearm

Question 65

What's the action of the triceps brachii?

Answer 65

agonist in forearm extension

Question 66

What's the action of the pronator teres?

Answer 66

pronates forearm

Question 67

What's the action of the brachioradialis?

Answer 67

synergist in forearm flexion

Question 68

Identify this muscle.

Answer 68

external intercostals

Question 69

Identify this muscle.

Answer 69

internal intercostals

Question 70

Identify this muscle.

Answer 70

diaphragm

Question 71

Identify this muscle.

Answer 71

external oblique

Question 72

Identify this muscle.

Answer 72

internal oblique

Question 73

Identify this muscle.

Answer 73

transverse abdominus

Question 74

Identify this muscle.

Answer 74

rectus abdominus

Question 75

Identify this muscle.

Answer 75

linea alba

Question 76

Identify this muscle.

Answer 76

brachialis

Question 77

Identify this muscle.

Answer 77

biceps brachii

Question 78

Identify this muscle.

Answer 78

triceps brachii

Question 79

Identify this muscle.

Answer 79

pronator teres

Question 80

Identify this muscle.

Answer 80

brachioradialis