Muscles of Mastication

Question 1

What are the 5 muscles of mastication?

Answer 1

masseter, temporalis, medial pterygoid, later pterygoid, sphenomandibularis

Question 2

Who is the king?

Answer 2

Masseter

Question 3

What is the flat quadrangular muscle that overlies the lateral surface of the mandibular ramus?

Answer 3

masseter

Question 4

What is a large, fan shaped muscle at the sides of the head?

Answer 4

temporalis

Question 5

What muscle’s anterior fibers elevate the mandible, while the posterior fibers retract the mandible?

Answer 5

temporalis

Question 6

What muscle is thick and triangular with 2 leads, that occupies primarily a horizontal position?

Answer 6

lateral pterygoid

Question 7

What muscle is almost a mirror-like image of the masseter?

Answer 7

medial pterygoid muscle

Question 8

What muscle is rhomboidal and runs practically in the same direction on the inner surface of the mandible?

Answer 8

medial pterygoid muscle

Question 9

Sphenomandibularis was thought to be apart of what muscle?

Answer 9

medial pterygoid muscle

Question 10

What is the joint which connects the mandible to the skull and regulates mandibular movement?

Answer 10

Temporomandibular joint (TMJ)

Question 11

What is an articulation between two bones?

Answer 11

A joint

Question 12

What is a bicondyla joint in which the condyles, located at the two ends of the mandible, function at the same time?

Answer 12

TMJ

Question 13

The hinging movement is caused by what joint?

Answer 13

ginglymoid joint

Question 14

What causes the gliding movements?

Answer 14

arthrodial joint

Question 15

What is the complex diarthrodial sliding-ginglymoid synovial joint, which attaches the mandible to the petrous part of the temporal bone of the cranium?

Answer 15

TMJ

Question 16

What prevents the TMJ from creating direct articulation?

Answer 16

articulator disc

Question 17

What is the depression in the temporal bone that accomodates the mandibular condyle?

Answer 17

mandibular condyle fossa

Question 18

What 3 ligaments support the TMJ?

Answer 18

collateral ligaments, capsular ligament, TM ligament

Question 19

What are the TMJ’s 2 accessory ligaments?

Answer 19

sphenomandibular ligament, stylomandibular ligament

Question 20

What attaches the medial and lateral borders of the articular disc to the poles of the condyles?

Answer 20

collateral ligaments

Question 21

What ligaments are responsible for dividing the joint mediolaterally into the superior and inferior joint cavities?

Answer 21

collateral ligaments

Question 22

What ligament surrounds and encompasses the TMJ?

Answer 22

capsular ligament

Question 23

What ligament reinforces the capsular ligament?

Answer 23

TM ligament

Question 24

What are the two parts of the TM ligament?

Answer 24

outer oblique portion and inner horizontal portion

Question 25

What are the 2 purposes of synovial fluid?

Answer 25

medium for providing metabolic requirements to the non vascular articular surface of the joint, lubricant between the articular surfaces during function

Question 26

What provides most the TMJ's innervation?

Answer 26

auriculotemporal nerve