Muscles of the Neck

Question 1

sternocleidomastoid (origin)

Answer 1

manubrium sterni and medial third of clavicle

Question 2

sternocleidomastoid (insertion)

Answer 2

mastoid process of occipital and temporal bone

Question 3

sternocleidomastoid (nerve)

Answer 3

spinal part of accessory nerve and C2 and C3

Question 4

sternocleidomastoid (action)

Answer 4

two muscles acting together extend head and flex neck, one muscle rotates head to opposite side

Question 5

digastric posterior belly (origin)

Answer 5

mastoid process of temporal bone

Question 6

digastric posterior belly (insertion)

Answer 6

intermediate tendon is held to hyoid bone by fascial sling

Question 7

digastric posterior belly (nerve)

Answer 7

facial nerve

Question 8

digastric posterior belly (action)

Answer 8

elevates hyoid bone and depresses mandible

Question 9

digastric anterior belly (origin)

Answer 9

body of mandible

Question 10

digastric anterior belly (insertion)

Answer 10

intermediate tendon is held to hyoid bone by fascial sling

Question 11

digastric anterior belly (nerve)

Answer 11

nerve to mylohyoid

Question 12

digastric anterior belly (action)

Answer 12

elevates hyoid bone and depresses mandible

Question 13

stylohyoid (origin)

Answer 13

styloid process

Question 14

stylohyoid (insertion)

Answer 14

body of hyoid bone

Question 15

stylohyoid (nerve)

Answer 15

facial nerve

Question 16

stylohyoid (action)

Answer 16

elevates hyoid bone

Question 17

mylohyoid (origin)

Answer 17

mylohyoid line of body of mandible

Question 18

mylohyoid (insertion)

Answer 18

body of hyoid bone and fibrous raphe

Question 19

mylohyoid (nerve)

Answer 19

inferior alveolar nerve

Question 20

mylohyoid (action)

Answer 20

elevates hyoid bone and floor of mouth; depresses mandible

Question 21

geniohyoid (origin)

Answer 21

inferior mental spine of mandible

Question 22

geniohyoid (insertion)

Answer 22

body of hyoid bone

Question 23

geniohyoid (nerve)

Answer 23

first cervical nerve

Question 24

geniohyoid (action)

Answer 24

elevates hyoid bone and depresses mandible

Question 25

sternohyoid (origin)

Answer 25

manubrium sterni and clavicle

Question 26

sternohyoid (insertion)

Answer 26

body of hyoid bone

Question 27

sternohyoid (nerve)

Answer 27

ansa cervicalis; C1, C2, C3

Question 28

sternohyoid (action)

Answer 28

depresses hyoid bone

Question 29

sternothyroid (origin)

Answer 29

manubrium sterni

Question 30

sternothyroid (insertion)

Answer 30

oblique line on lamina of thyroid cartilage

Question 31

sternothyroid (nerve)

Answer 31

ansa cervicalis; C1, C2, C3

Question 32

sternothyroid (action)

Answer 32

depresses larynx

Question 33

thyrohyoid (origin)

Answer 33

oblique line on lamina of thyroid cartilage

Question 34

thyrohyoid (insertion)

Answer 34

lower border of body of hyoid bone

Question 35

thyrohyoid (nerve)

Answer 35

first cervical nerve

Question 36

thyrohyoid (action)

Answer 36

depresses hyoid bone and elevates larynx

Question 37

omohyoid inferior belly (origin)

Answer 37

upper margin of scapula and suprascapular ligament

Question 38

omohyoid inferior belly (insertion)

Answer 38

intermediate tendon is held to first rib and clavicle by fascial sling

Question 39

omohyoid inferior belly (nerve)

Answer 39

ansa cervicalis; C1, C2, C3

Question 40

omohyoid inferior belly (action)

Answer 40

depresses hyoid bone

Question 41

omohyoid superior belly (origin)

Answer 41

lower border of body of hyoid bone

Question 42

omohyoid superior belly (insertion)

Answer 42

intermediate tendon is held to first rib and clavicle by fascial sling

Question 43

omohyoid superior belly (nerve)

Answer 43

ansa cervicalis; C1, C2, C3

Question 44

omohyoid superior belly (action)

Answer 44

depresses hyoid bone

Question 45

scalenus anterior (origin)

Answer 45

transverse processes of third, fourth, fifth, and sixth cervical vertebrae

Question 46

scalenus anterior (insertion)

Answer 46

first rib

Question 47

scalenus anterior (nerve)

Answer 47

C4, C5, C6

Question 48

scalenus anterior (action)

Answer 48

elevates first rib; laterally flexes and rotates cervical part of vertebral column

Question 49

scalenus medius (origin)

Answer 49

transverse processes of upper six cervical vertebrae

Question 50

scalenus medius (insertion)

Answer 50

first rib

Question 51

scalenus medius (nerve)

Answer 51

anterior rami of cervical nerves

Question 52

scalenus medius (action)

Answer 52

elevates first rib; laterally flexes and rotates cervical part of vertebral column

Question 53

scalenus posterior (origin)

Answer 53

transverse processes of lower cervical vertebrae

Question 54

scalenus posterior (insertion)

Answer 54

second rib

Question 55

scalenus posterior (nerve)

Answer 55

anterior rami of cervical nerves

Question 56

scalenus posterior (action)

Answer 56

elevates second rib; laterally flexes and rotates cervical part of vertebral column