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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

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
Q

Lesson of the trigeminal nerve causes

A

Anesthesia of corresponding areas on face and paralysis of muscles of mastication

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26
Q

Action of temporalis

A

Anterior and posterior fibers elevate mandible, posterior fibers retract mandible

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27
Q

Origin and insertion of temporalis

A

O: floor of temporal fossa
I: Coronoid process of mandible

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28
Q

Action of the masseter

A

Elevates and protrudes mandible, deep fibers retrude mandible

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29
Q

Origin and insertion of masseter

A

O: zygomatic arch
I: lateral surface of mandible

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30
Q

Action of medial pterygoid

A

Elevates and helps protrude mandible

31
Q

Origin and insertion of medial pterygoid

A

O: tuberosity of maxilla and lateral pterygoid plate
I: medial surface of angle of mandible

32
Q

Action of lateral pterygoid

A

Protrude mandible and produce side to side movements

33
Q

Origin and insertion of lateral pterygoid

A

O: upper head-greater wing of sphenoid
Lower head- lateral pterygoid plate
I: neck of mandible and articular disc , capsule of TM joint

34
Q

Formed by head of the mandible, mandibular fossa, and articular tubercle of temporal bone

A

Temporomandibular joint (TMJ)

35
Q

Muscles involved in protraction of TMJ

A

Lateral pterygoid
Medial pterygoid
Masseter

36
Q

Muscles involved in retraction of TMJ

A

Temporalis
Masseter
Geniohyoid
Digastric

37
Q

Muscles involved in elevation of TMJ

A

Temporalis
Masseter
Medial pterygoid
(This is biting movement)

38
Q

Muscles involved in depression of TMJ

A 
Gravity 
Lateral pterygoid 
Digastric 
Geniohyoid 
Mylohyoid
39
Q

Movement of the mandible to one side contracts

A

Temporalis of same side
Medial and lateral pterygoid of opposite side
Masseter of same side

40
Q

What kind of joint is the TMJ

A

Hinge joint and gliding joint

41
Q

The TMJ has two movements

A

Forward gliding

Hinge like rotation

42
Q

The TMJ is easily

A

Dislocated

43
Q

Dislocation of the TMJ usually occurs? Especially when?

A

Anteriorly

When tanning or taking a large bite

44
Q

if the TMJ is dislocated the person is then

A

Unable to close the mouth

45
Q

TMJ damage occurs from powerful

A

Compressive forces

46
Q

TMJ damage can occur from

A

Frequently chewing gum, hard foods, toothpicks
Grinding teeth
Nail bitting

47
Q

What muscles elevate the mandible and close the mouth

A

Temporalis
Masseter
Medial pterygoid

48
Q

Muscles that pull mandible anteriorly and opens mouth

A

Lateral pterygoid

Anterior belly of digastric

49
Q

Muscles that tenses floor and roof of mouth

A

Mylohyoid

Tensor veli palantini

50
Q

Forms the roof of mouth and floor of nasal cavity

A

Palate

51
Q

The palate consists of

A

Hard palate

Soft palate

52
Q

The hard palate is

A

Anterior

Immobile

53
Q

The side palate is

A

Posterior

Mobile

54
Q

The tip of the soft palate

A

Uvula

55
Q

The hard palate is arched and formed by

A

The palatine process of maxillae and horizontal process of palatine bones

56
Q

Another name for soft palate

A

Velum palatinum

57
Q

What are the muscles of the soft palate

A

Tensor veli palatini

Levator veli palatini

58
Q

Action and nerve of tensor veli palatini

A

A: tenses soft palate, opens pharyngotympanic tube
N: CN V3 mandibular trigeminal

59
Q

Action and nerve of levator veli palatini

A

A: elevates soft palate
N: CNX vagus

60
Q

Uvular action and nerve

A

A: elevates uvula
N: CNX vagus

61
Q

Action and nerve of palatopharyngeus

A

A: elevates pharynx
N: CNX vagus

62
Q

Action and nerve of palatoglossus

A

A: elevates tongue
N: CNX vagus

63
Q

Action and nerve of genioglossus

A

A: protrudes and depresses tongue
N: CNXII hypoglossal

64
Q

Action and nerve of styloglossus

A

A: retracts and elevates tongue
N: CNXII hypoglossal

65
Q

Action and nerve of hyoglossus

A

A: retracts and depresses tongue
N: CNXII hypoglossal

66
Q

Functions of intrinsic muscles of the tongue (genioglossus, styloglossus, and hyoglossus)

A 
Mastication 
Taste 
Deglutition 
Articulation 
Oral cleansing
67
Q

Motor innervation of tongue is from

A

CNXII hypoglossal

68
Q

Sensory innervation of tongue for general and taste

A

Vagus X

Glossopharyngeal IX

69
Q

Sensory innervation of tongue general sensation

A

Lingual nerve

70
Q

Sensory innervation of tongue for taste

A

Facial nerve VII

71
Q

The salivary glands are

A

Submandibular gland
Sublingual gland
Parotid gland

72
Q

The submandibular gland is innervated by

A

Parasympathetic fibers from facial nerve VII

73
Q

The sublingual gland is innervated by

A

Parasympathetic fibers from facial nerve VII

74
Q

The parotid gland is innervated by

A

Parasympathetic fibers from glossopharyngeal nerve IX

Sam's Human Gross Anatomy (11 decks)

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