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Oral Anatomy Q4 > Muscles > Flashcards

Muscles Flashcards

1
Q

What are the components of TMJ

A

Mandibular Condyle
Articular Fossa and Eminence
Articular Disc

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2
Q

Mandibular Condyle: greater dimension _____

A

mediolateral

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3
Q

Articular Fossa..nonfunctioning or functioning portion?

A

nonfunctioning

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4
Q

Articular eminence…nonfunctioning or functioning portion?

A

functioning

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5
Q

What is maximum intercuspation related to?

A

Articular disc

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6
Q

What are elastic bands that support joint and limit movement (they do not move the joint)?

A

Ligaments

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7
Q

What are the 4 ligaments/capsules in the face?

A

Fibrous capsule
Lateral ligament
Stylomandibular ligament
Sphenomandibular ligament

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8
Q

Is fibrous capsule more posterior or anterior of lateral ligament?

A

Posterior to the lateral ligament.

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9
Q

Which ligament is attached to the styloid process?

A

Stylomandibular ligament

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10
Q

Name the muscles of mastication

A

Masseter
Temporalis
Medial Pterygoid
Lateral Pterygoid

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11
Q

Which muscle elevates mandible? (close teeth together)

A

Masseter muscles

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12
Q

Zygomatic Arch is which muscles origin?

A

Masseter muscles

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13
Q

Lateral surface of Rami and angle of mandible is which muscles insertion?

A

Masseter muscles

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14
Q

____ arch is the masseter muscles origin

A

Zygomatic

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15
Q

What is the insertion for the masseter muscles?

A

Lateral surface of rami and angle of mandible

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16
Q

What is the function of the temporalis muscles

A

To elevate and position (retrude) mandible

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17
Q

Which fibers elevate mandible and close teeth?

A

Anterior fibers of the temporalis muscles

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18
Q

____ fibers retrude mandible

A

Posterior fibers of the temporalis muscles

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19
Q

What are the two kinds of fibers that the temporalis muscle has?

A

Anterior and Posterior

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20
Q

____ ____ on cranium is the origin of temporalis muscles

A

Temporal fossa

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21
Q

What are the insertions of temporalis muscles?

A

Coronoid process, anterior border of ramus, and temporal crest

22
Q

Coronoid process, anterior border of ramus, and temporal crest are the origin or insertion for temporalis muscles?

A

Insertion

23
Q

What is the function of medial pterygoid muscles?

A

Elevate mandible

24
Q

___ ___ is origin for medial pterygoid muscle

A

Pterygoid fossae

25
Q

Pterygoid fossa is the insertion or origin for which muscle?

A

Origin and medial pterygoid muscle

26
Q

What is the insertion for medial pterygoid muscle?

A

Medial Angle Mandible

27
Q

Medial angle mandible is the insertion for which muscle?

A

medial pterygoid muscle

28
Q

Function of lateral pterygoid muscle

A

One alone moves mandible laterally

Together: protude, depress mandible

29
Q

What are the 2 origins for lateral pterygoid muscle?

A

Lateral pterygoid plate (sphenoid) and greater wing

30
Q

Lateral pterygoid plate and greater wing are the insertion or origin for which muscle?

A

Origin, lateral pterygoid muscle

31
Q

What are the 2 insertions for lateral pterygoid muscle?

A

Pterygoid fovea (condylar process) and anterior part of articular disc

32
Q

Pterygoid ___ and ___ part of articular disc are the insertions for lateral pterygoid muscle

A

Fovea (condylar process)
and
anterior

33
Q

Geniohyoid, mylohyoid, and digastric are apart of what muscle group?

A

Suprahyoids

34
Q

What are 3 muscles associated with suprahyoids?

A

Geniohyoid
Mylohyoid
Digastric

35
Q

Omohyoid and sternohyoid are apart of what muscle group?

A

Infrahyoids

36
Q

What are 2 muscles associated with the infrahyoids?

A

Omohyoid and sternohyoid

37
Q

What is the function if suprahyoids and infrahyoids work together

A

Open mouth, depress mandible

38
Q

What are the 3 muscles that are associated with the upper lip for facial expression?

A

Zygomaticus
Levator labii sup.
Levator anguli oris

39
Q

What are the 3 muscles that are associated with the lower lip for facial expression?

A

Depressor labii inf.
Depressor anguli oris
Mentalis

40
Q

What are the 8 muscles associated with facial expression?

A 
Orbicularis oris
Buccinator m.
Zygomaticus
Levator labii sup.
Levator anguli oris
Depressor labii inf.
Depressor anguli oris
Mentalis
41
Q

Depressor labii inf., Depressor anguli oris, and Mentalis are associated with which lip? (lower or upper)

A

Lower

42
Q

Zygomaticus, Levator labii sup., and Levator anguli oris are associated with which lip (Lower or upper)?

A

Upper

43
Q

Masseters, medial pterygoids, and temporalis (anterior vertical and middle fibers) control which function of the mandible? (elevation, depression, or retrustion)

A

Elevation

44
Q

Suprahyoids, infrahyoids, and both lateral pterygoids control which function of the mandible?

A

Depression

45
Q

What are the 3 muscles that control elevation of the mandible?

A

Masseters, medial pterygoids, and temporalis

46
Q

What are the 3 muscles that control depression of the mandible?

A

Supra- and infrahyoids together

Both lateral pterygoids

47
Q

What are the muscles with retrusion of the mandible?

A

Temporalis: posterior horizontal fibers

Suprahyoids (with help from infrahyoids)

48
Q

Which muscles control protrusion of the mandible?

A

Both lateral pterygoids simultaneously

49
Q

Both lateral pterygoids simultaneously control which function of the mandible?

A

protrusion

50
Q

Lateral excursion of mandible: which muscles?

A

Right lateral pterygoid moves mandible to left; left lateral pterygoid moves mandible to right

51
Q

Innervation of muscles of mastication

A

Trigeminal (CN V) division III, MANDIBULAR BRANCH

52
Q

Innervation of Muscles of Facial Expression

A

Facial (CN VII)

Oral Anatomy Q4 (1 decks)

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