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2 Anatomy > Muscles Of Mastication > Flashcards

Muscles Of Mastication Flashcards

1
Q

Name this structure

A

Glenoid fossa

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2
Q

Name this structure

A

Articular eminence

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3
Q

Name this structure

A

Condyle

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4
Q

Name this bone

A

Zygomatic bone

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5
Q

Name this bone

A

Temporal bone

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6
Q

What are the 3 groups of movements for muscles involved in mastication?

A

Between skull and mandible
Between mandible and hyoid
Hyoid stabilisers

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7
Q

Which group of muscles is blue?

A

Between skull and mandible

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8
Q

Which group of muscles is purple?

A

Hyoid stabilisers

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9
Q

Which group of muscles is green?

A

Between mandible and hyoid

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10
Q

What are the 4 muscles between the skull and mandible?

A

Masseter
Temporalis
Medial Pterygoid
Lateral Pterygoid

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11
Q

Name this muscle

A

Superficial Masseter

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12
Q

Where is the origin of the superficial Masseter?

A

Zygomatic arch/bone

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13
Q

Where is the insertion of the superficial Masseter?

A

Angle/ramus of mandible

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14
Q

What are the actions of the Masseter? 3

A

Closes jaw
Assists protrusion
Assists lateral movement

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15
Q

The superficial Masseter is innervated by which nerve?

A

CN V3
Masseteric nerve

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16
Q

Name this muscle

A

Deep Masseter

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17
Q

Where is the origin of the deep Masseter?

A

Inner aspect of zygomatic arch

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18
Q

Where is the insertion of the deep Masseter ?

A

Angle/ramus of mandible

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19
Q

The deep Masseter is innervated by which nerve?

A

CNV3
Masseteric nerve

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20
Q

Name this muscle

A

Temporalis

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21
Q

Where is the origin of Temporalis?

A

Inferior temporal line and fascia

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22
Q

Where is the insertion of Temporalis?

A

Coronoid process

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23
Q

What r the actions of Temporalis? 3

A

Jaw elevation
Retrusion
Assists lateral movement

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24
Q

Temporalis is innervated by which nerve?

A

CN V3
Deep temporal nerve

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25
Name this muscle
Lateral Pterygoid
26
What are the two parts of the lateral Pterygoid?
Upper head Lower head
27
Where is the upper head of the lateral Pterygoids origin?
Infratemporal surface of greater wing of sphenoid
28
Where is the upper head of the lateral Pterygoids insertion?
Capsule and articular disc of TMJ
29
Where is the lower head of the lateral Pterygoids origin?
Lateral aspect of lateral Pterygoid plate
30
Where is the lower head of the lateral Pterygoids insertion?
Pterygoid fovea below head of condyle
31
What is the function of the lateral pterygoid? 3
Assists during wide opening Protrusion Lateral excursion
32
Which nerve innervates the lateral Pterygoid muscles
CN V3 Motor root nerve to lateral Pterygoid
33
Name this muscle
Medial Pterygoid
34
What r the origins of the medial Pterygoid?
Medial aspect of lateral Pterygoid plate Maxillary tuberosity
35
Where is the insertion of the medial Pterygoid?
Medial aspect of ramus/angle of mandible
36
What are the 3 actions of the medial Pterygoid?
Jaw elevation Protrusion Lateral excursions
37
Which nerve innervates the medial Pterygoid?
CN V3 Motor root nerve to medial Pterygoid
38
What are the three muscles between the mandible and hyoid?
Geniohyoid Mylohyoid Digastric (anterior)
39
Name this muscle
Geniohyoid
40
Where is the origin of Geniohyoid? 2
Inferior mental spine Inferior genial tubercle
41
Where is the insertion of the Geniohyoid?
Hyoid bone
42
What is the action of the Geniohyoid? 3
Jaw opening Retrusion Raise the hyoid
43
What is the innervation of the Geniohyoid?
C1 with Hypoglossal CNXII
44
Name this muscle
Mylohyoid
45
Name this structure
Median raphe
46
What is the action of the Mylohyoid? 3
Jaw opening Raise hyoid Raise floor of mouth
47
What is the innervation to the Mylohyoid?
CN V3 Branch of inferior alveolar nerve to Mylohyoid
48
Name this muscle
Anterior belly of digastric
49
Name this structure
Intermediate tendon
50
Name this structure
Fibrous loop
51
Where is the origin of the anterior belly of digastric
Digastric fossa
52
What is the action of the anterior belly of Digastric?
Jaw opening Retrusion Raise hyoid bone
53
What is the innervation to the anterior belly of Digastric?
CN V3 Branch of inferior alveolar nerve to Mylohyoid
54
What are the three hyoid stabiliser muscles?
Infrahyoids Posterior Digastric Stylohyoid
55
What are the three infrahyoid muscles?
Thyrohyoid Omohyoid Sternohyoid
56
Name this muscle
Stylohyoid
57
Name this muscle
Posterior belly of Digastric
58
Name this muscle
Omohyoid
59
Name this muscle
Sternohyoid
60
Name this muscle
Thyrohyoid

2 Anatomy (7 decks)

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