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Sam's Human Gross Anatomy > 4.3 Muscles of Eyes, Mastication, Soft Palate, And Tongue > Flashcards

4.3 Muscles of Eyes, Mastication, Soft Palate, And Tongue Flashcards

(74 cards)

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1
Q

Lacrimal gland produces

A

Tears

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2
Q

The path of a tear from the lacrimal gland to the nasal cavity

A 
Lacrimal duct 
Surface of eye 
Lacrimal lake
Lacrimal puncta
Lacrimal canaliculi
Lacrimal sac 
Nasolacrimal duct 
Nasal cavity inferior to the inferior concha
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3
Q

How many ocular muscles move the eyeball

A

6

4 straight and 2 oblique

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4
Q

The 4 rectus eye muscles arise by a

A

Common tendinous ring

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5
Q

The tendon of the superior oblique muscle runs through a fibrocartilaginous loop call the ______ and then inserts

A

Trochlea

Inserts into the sclera of eyeball

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6
Q

What nerve innervates the superior oblique

A

Trochlear

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7
Q

What nerve innervates the inferior oblique

A

Oculomotor

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8
Q

What nerve innervates the inferior rectus

A

Oculomotor

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9
Q

What nerve innervates the lateral rectus

A

Abducens

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10
Q

What nerve innervates the medial rectus

A

Oculomotor

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11
Q

What nerve innervates superior rectus

A

Oculomotor

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12
Q

Eye muscles do not

A

Work alone

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13
Q

Inferior oblique action

A

Elevates and laterally deviates gaze

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14
Q

Action of superior oblique

A

Depresses and laterally deviates gaze

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15
Q

Action of inferior rectus

A

Depresses and medially deviates gaze

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16
Q

Action of lateral rectus

A

Laterally deviates gaze

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17
Q

Action of medial rectus

A

Medially deviates gaze

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18
Q

Action of superior rectus

A

Elevates and medially deviates gaze

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19
Q

When the eye is adducted or abducted the superior and inferior obliques work best to

A

Lower and raise the eye

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20
Q

To look directly upwards we must use both

A

Superior rectus and inferior oblique

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21
Q

To look directly downward must use both

A

Inferior rectus and superior oblique

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22
Q

Temporal fossa is superior to

A

The zygomatic arch

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23
Q

The infratemporal fossa is inferior to

A

The zygomatic arch

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24
Q

What cranial nerve is the main sensory nerve for the head and the motor nerve for the muscles of mastication

A

Trigeminal nerve

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25
Lesson of the trigeminal nerve causes
Anesthesia of corresponding areas on face and paralysis of muscles of mastication
26
Action of temporalis
Anterior and posterior fibers elevate mandible, posterior fibers retract mandible
27
Origin and insertion of temporalis
O: floor of temporal fossa I: Coronoid process of mandible
28
Action of the masseter
Elevates and protrudes mandible, deep fibers retrude mandible
29
Origin and insertion of masseter
O: zygomatic arch I: lateral surface of mandible
30
Action of medial pterygoid
Elevates and helps protrude mandible
31
Origin and insertion of medial pterygoid
O: tuberosity of maxilla and lateral pterygoid plate I: medial surface of angle of mandible
32
Action of lateral pterygoid
Protrude mandible and produce side to side movements
33
Origin and insertion of lateral pterygoid
O: upper head-greater wing of sphenoid Lower head- lateral pterygoid plate I: neck of mandible and articular disc , capsule of TM joint
34
Formed by head of the mandible, mandibular fossa, and articular tubercle of temporal bone
Temporomandibular joint (TMJ)
35
Muscles involved in protraction of TMJ
Lateral pterygoid Medial pterygoid Masseter
36
Muscles involved in retraction of TMJ
Temporalis Masseter Geniohyoid Digastric
37
Muscles involved in elevation of TMJ
Temporalis Masseter Medial pterygoid (This is biting movement)
38
Muscles involved in depression of TMJ
``` Gravity Lateral pterygoid Digastric Geniohyoid Mylohyoid ```
39
Movement of the mandible to one side contracts
Temporalis of same side Medial and lateral pterygoid of opposite side Masseter of same side
40
What kind of joint is the TMJ
Hinge joint and gliding joint
41
The TMJ has two movements
Forward gliding | Hinge like rotation
42
The TMJ is easily
Dislocated
43
Dislocation of the TMJ usually occurs? Especially when?
Anteriorly | When tanning or taking a large bite
44
if the TMJ is dislocated the person is then
Unable to close the mouth
45
TMJ damage occurs from powerful
Compressive forces
46
TMJ damage can occur from
Frequently chewing gum, hard foods, toothpicks Grinding teeth Nail bitting
47
What muscles elevate the mandible and close the mouth
Temporalis Masseter Medial pterygoid
48
Muscles that pull mandible anteriorly and opens mouth
Lateral pterygoid | Anterior belly of digastric
49
Muscles that tenses floor and roof of mouth
Mylohyoid | Tensor veli palantini
50
Forms the roof of mouth and floor of nasal cavity
Palate
51
The palate consists of
Hard palate | Soft palate
52
The hard palate is
Anterior | Immobile
53
The side palate is
Posterior | Mobile
54
The tip of the soft palate
Uvula
55
The hard palate is arched and formed by
The palatine process of maxillae and horizontal process of palatine bones
56
Another name for soft palate
Velum palatinum
57
What are the muscles of the soft palate
Tensor veli palatini | Levator veli palatini
58
Action and nerve of tensor veli palatini
A: tenses soft palate, opens pharyngotympanic tube N: CN V3 mandibular trigeminal
59
Action and nerve of levator veli palatini
A: elevates soft palate N: CNX vagus
60
Uvular action and nerve
A: elevates uvula N: CNX vagus
61
Action and nerve of palatopharyngeus
A: elevates pharynx N: CNX vagus
62
Action and nerve of palatoglossus
A: elevates tongue N: CNX vagus
63
Action and nerve of genioglossus
A: protrudes and depresses tongue N: CNXII hypoglossal
64
Action and nerve of styloglossus
A: retracts and elevates tongue N: CNXII hypoglossal
65
Action and nerve of hyoglossus
A: retracts and depresses tongue N: CNXII hypoglossal
66
Functions of intrinsic muscles of the tongue (genioglossus, styloglossus, and hyoglossus)
``` Mastication Taste Deglutition Articulation Oral cleansing ```
67
Motor innervation of tongue is from
CNXII hypoglossal
68
Sensory innervation of tongue for general and taste
Vagus X | Glossopharyngeal IX
69
Sensory innervation of tongue general sensation
Lingual nerve
70
Sensory innervation of tongue for taste
Facial nerve VII
71
The salivary glands are
Submandibular gland Sublingual gland Parotid gland
72
The submandibular gland is innervated by
Parasympathetic fibers from facial nerve VII
73
The sublingual gland is innervated by
Parasympathetic fibers from facial nerve VII
74
The parotid gland is innervated by
Parasympathetic fibers from glossopharyngeal nerve IX

Sam's Human Gross Anatomy (11 decks)

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