Intro to Myology, Muscles of the Head, Neck, and Upper Limb

Question 1

Muscle that acts on the skin and works to lower the jaw; tenses neck and depresses the mandible

Answer 1

platysma

Question 2

Muscle that raises eyebrows

Answer 2

frontalis

Question 3

muscle that purses lips

Answer 3

orbicularis oris

Question 4

muscle that raises corners of lips

Answer 4

zygomaticus major

Question 5

muscle that compresses cheeks

Answer 5

buccinator

Question 6

muscle that lowers corners of lips

Answer 6

depressor anguli oris

Question 7

muscle that tenses scalp

Answer 7

occipitalis

Question 8

muscle that closes eyelids

Answer 8

orbicularis oculi

Question 9

muscles that elevates mandible

Answer 9

masseter and temporalis

Question 10

muscle that elevates jaw, moves jaw medially

Answer 10

medial pterygoid

Question 11

muscle that protrudes the lower jaw

Answer 11

lateral pterygoid

Question 12

muscle that turns eye medially

Answer 12

medial rectus

Question 13

muscle that turns eye laterally

Answer 13

lateral rectus

Question 14

muscle that turns eye superiorly

Answer 14

superior rectus

Question 15

muscle that turns eye inferiorly

Answer 15

inferior rectus

Question 16

muscle that turns eye inferiorly and laterally; passes through a tendinous loop, the trochlea, and then attaches to the eyeball

Answer 16

superior oblique

Question 17

muscle that turns eye superiorly and laterally; passes through a tendinous loop, the trochlea, and then attaches to the eyeball

Answer 17

inferior oblique

Question 18

The extraocular muscles are innervated by what cranial nerves

Answer 18

oculomotor nerve (CN 3), trochlear nerve (CN 4), and abducens nerve (CN 6)

Question 19

muscle that retracts, elevates, and depresses the scapula; extends neck if used bilaterally

Answer 19

trapezius

Question 20

muscle that turns head, or flexes neck if used bilaterally

Answer 20

sternocleidomastoid

Question 21

superfifcial neck muscles are innervated by what cranial nerve

Answer 21

spinal accessory CN 11

Question 22

muscle that position the eyeball

Answer 22

the extraocular muscles

Question 23

muscle that control the position of the hyoid bone and the floor of the oral cavity

Answer 23

suprahyoid

Question 24

muscle that controls the swallowing motions; propels food and water to the esophagus

Answer 24

pharyngeal muscles

Question 25

muscles that move the vocal cords

Answer 25

laryngeal muscles

Question 26

muscles that control the position (extrinsic) and shape (intrinsic) shape of the tongue

Answer 26

the muscles of the tongue

Question 27

abducts the glenohumeral joint

Answer 27

deltoid

Question 28

primarily an adductor of the glenohumeral (shoulder) joint; makes up the bulk of the chest musculature

Answer 28

pectoralis major

Question 29

responsible for extension and adduction of the glenohumeral joint

Answer 29

latissimus dorsi

Question 30

functions to depress the scapula

Answer 30

pectoralis minor

Question 31

protracts the scapula; used to increase the reach of your outstretched hand

Answer 31

serratus anterior

Question 32

muscle that elevates the scapula

Answer 32

levator scapulae

Question 33

muscle that retracts the scapula

Answer 33

rhomboid minor and rhomboid major

Question 34

deep shoulder muscles are synergists to

Answer 34

superficial muscles

Question 35

muscle for extension and internal rotation of the glenohumeral joint (deep humeral muscle)

Answer 35

teres major

Question 36

muscle for the adduction of the glenohumeral joint (deep humeral muscle)

Answer 36

coracobrachialis

Question 37

muscle for abduction of the glenohumeral joint (deep humeral muscle)

Answer 37

supraspinatus

Question 38

muscle for the external rotation of the glenohumeral joint (deep humeral muscle)

Answer 38

infraspinatus and teres minor

Question 39

muscle for the internal rotation of the glenohumeral joint

Answer 39

subscapularis

Question 40

extension of the elbow in posterior brachi

Answer 40

triceps and anconeus

Question 41

flexion of the elbow in the anterior brachi

Answer 41

brachialis and biceps brachii

Question 42

flexion of the elbow in the posterior antebrachi

Answer 42

brachioradialis

Question 43

extension of the wrist in the posterior antebrachi

Answer 43

extensor carpi radialis (longus and brevis) and extensor carpi ulnaris

Question 44

extension of digits 2-4

Answer 44

extensor digitorum

Question 45

extension of digit 5

Answer 45

extensor digiti minimi

Question 46

supination of the hand in the posterior antebrachi

Answer 46

supinator

Question 47

extension of digit 2

Answer 47

extensor indicis

Question 48

extension of digit 1

Answer 48

extensor pollicis (longus and brevis)

Question 49

abduction of digit 1

Answer 49

abductor pollicis longus

Question 50

flexion of the digits in anterior antebrachi

Answer 50

flexor digitorum superficialis

Question 51

pronation of hand in anterior antebrachi

Answer 51

pronator teres, pronator quadratus

Question 52

flexion of wrist in anterior antebrachi

Answer 52

flexor carpi radialis, flexor carpi ulnaris

Question 53

tenses skin of the hand and flexion of the wrist in anterior antebrachi

Answer 53

palmaris longus

Question 54

flexion of digit 2-5 in anterior antebrachi

Answer 54

flexor digitorum profundus

Question 55

flexion of digit 1 in anterior antebrachi

Answer 55

flexor pollicis longus