muscles

Question 1

masseter origin

Answer 1

zygomatic arch

(inferior and emdial

Question 2

masseter insertion

Answer 2

lateral surface of rami and angle of mandible

Question 3

masseter action/movement

Answer 3

elevates mandible, closes teeth together with force

Question 4

temporalis origin

Answer 4

temporal fossae

Question 5

temporalis insertion

Answer 5

coronoid process, anteror border of ramus, and temporal crest

Question 6

temporalis action

Answer 6

anterior(vertical) - elevate/close and position mandible

posterior (more horizontal)- retrude/pull back and position mandible

Question 7

medial pterygoid origin

Answer 7

pterygoid fossa on spenoid and tuberosity

Question 8

medial pterygoid insertion

Answer 8

medial angle on mandible

Question 9

medial pterygoid action

Answer 9

elevate/close mandible

Question 10

lateral pterygoid origin

Answer 10

lateral pterygoid plate of sphenoid and greater wing and infratemporal of sphenoid

Question 11

lateral pterygoid insertion

Answer 11

pterygoid fovea on neck of condyle and anterior part of articular disc and capsuleon mandible

Question 12

lateral pterygoid action

Answer 12

both - protrude and depress/open mandible

one - lateral toward one side (left lateral pterygoid muscle moves mandible to the right)

Question 13

infrahyoid group

Answer 13

attaches from hyoid bone down to the sternum or clavicle

Question 14

suprahyoid group

Answer 14

attaches at hyoid bone up to the mandible

Question 15

infra and suprahyoid groups together action

Answer 15

retrude and depress mandible

Question 16

cheek muscle

Answer 16

buccinator

Question 17

surrounds the lips as the pucker muscle; not attached to the skull

Answer 17

orbicularis oris

Question 18

smile muscles

Answer 18

levator labii superioris and levator anguli oris

Question 19

frown muscles

Answer 19

depressor labii inferioris and depressor anguli oris

Question 20

muscle in chin, if tense can make access to lower teeth a challenge

Answer 20

mentalis

Question 21

a thin muscle that covers front of the neck just under the skin

Answer 21

platysma

Question 22

from mastoid process to sternum and clavicle

Answer 22

sternocleidomnastoid muscle

Question 23

sphenomandibular ligament attachments

Answer 23

spine of sphenoid to lingula

Question 24

stylomandibular ligament attachments

Answer 24

styloid process of temporal bone to angle and posterior border of the angle of the mandible

Question 25

capsular ligament attachments

Answer 25

articular fossa/eminence to neck of condyloid process

Question 26

lateral ligament attachments

Answer 26

from zygomatic arch and is directed obliquely down and posterior to the lateral and posterior neck of condyle

Question 27

geniohyoid, mylohyoid, digastric

Answer 27

suprahyoids

Question 28

omohyoid and sternohyoid

Answer 28

infrahyoids

Question 29

elevation muscles

Answer 29

massesters, medial pterygoids, anterior temporalis

Question 30

depression muscles

Answer 30

supra/infrahyoids together and both lateral pterygoids

Question 31

retrusion muscles

Answer 31

posterior portion of temporalis,suprahyoids

Question 32

protrusion muscles

Answer 32

both lateral pterygoid

Question 33

lateral excursion

Answer 33

one of the lateral pterygoids

Question 34

innervation of muscles of mastication

Answer 34

trigeminal nerve (CN V) divison 3 mandibular branch

Question 35

innervation of muscles of facial expression

Answer 35

facial nerve (CN VII)