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Dental Anatomy > Muscles of Mastication > Flashcards

Muscles of Mastication Flashcards

1
Q

What are the 5 muscles of mastication?

A

masseter, temporalis, medial pterygoid, later pterygoid, sphenomandibularis

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2
Q

Who is the king?

A

Masseter

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3
Q

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

A

masseter

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4
Q

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

A

temporalis

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5
Q

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

A

temporalis

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6
Q

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

A

lateral pterygoid

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7
Q

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

A

medial pterygoid muscle

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8
Q

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

A

medial pterygoid muscle

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9
Q

Sphenomandibularis was thought to be apart of what muscle?

A

medial pterygoid muscle

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10
Q

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

A

Temporomandibular joint (TMJ)

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11
Q

What is an articulation between two bones?

A

A joint

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12
Q

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

A

TMJ

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13
Q

The hinging movement is caused by what joint?

A

ginglymoid joint

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14
Q

What causes the gliding movements?

A

arthrodial joint

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15
Q

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

A

TMJ

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16
Q

What prevents the TMJ from creating direct articulation?

A

articulator disc

17
Q

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

A

mandibular condyle fossa

18
Q

What 3 ligaments support the TMJ?

A

collateral ligaments, capsular ligament, TM ligament

19
Q

What are the TMJ’s 2 accessory ligaments?

A

sphenomandibular ligament, stylomandibular ligament

20
Q

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

A

collateral ligaments

21
Q

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

A

collateral ligaments

22
Q

What ligament surrounds and encompasses the TMJ?

A

capsular ligament

23
Q

What ligament reinforces the capsular ligament?

A

TM ligament

24
Q

What are the two parts of the TM ligament?

A

outer oblique portion and inner horizontal portion

25
Q

What are the 2 purposes of synovial fluid?

A

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

26
Q

What provides most the TMJ’s innervation?

A

auriculotemporal nerve

Dental Anatomy (6 decks)

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