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ANA exam 4 > oral cavity 1 > Flashcards

oral cavity 1 Flashcards

1
Q

what mainly comprises the submandibular region?

A

the submandibular gland, suprehyoid muscles, and fascial a

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2
Q

the submandibular gland has a large ___ portion and a __ deep portion that is

A

large, small

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3
Q

the deep portion of the submandibular gland is continuous with the posterior border of ?

A

the mylohyoid muscle.

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4
Q

the suprahyoid m consist of ?

A

digastric m
stylohyoid
geniohyoid
and mylohyoid

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5
Q

what is the function of the digastric m?

A

pulls the chin down and back,

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6
Q

the anterior belly of the digastric m is innervated by? wheras posterior belly?

A

ant: v3
post: fascial as it exits sylomastoid forament

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7
Q

what is the function of the stylohyoid m

A

pulls the hyoid back to elongate the floor of the mouth

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8
Q

what is the stylohyoid innervation?

A

fascial nerve as it exits the stylomastoid foramen

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9
Q

the mylohyoid forms the muscular floor aka?

A

diaphragma oris

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10
Q

what is the innervation of the mylohyoid?

A

nerve to the mylohyoid V3

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11
Q

the mylohyoid acts as a ____ to support the muscular mass of the tongue

A

sling

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12
Q

the geniohyoid extends where

A

from the inferior genial tubercle (mental spine) to the hyoid bone.

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13
Q

what is the action of the geniohyoid?

A

protrude the hyoid

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14
Q

what is the innervation of the geniohyoid?

A

C1 via the hypoglossal nerve XII

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15
Q

what two muscles comprise the actual floor of the mouth?

A

the geniohyoid and the mylpohyoid

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16
Q

how many ducts does the submandibular gland have?

A

1

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17
Q

how does the submandibular duct leave the gland? pathway all the way to termination

A

leaves the deep portion of the submandibular gland and crosses the lingual nerve before terminating the submandibular papilla.

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18
Q

what are the three salivary gland?

A

the submandibular, parotid and sublingual

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19
Q

which salivary gland is the smallest

?

A

the sublingual gland.

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20
Q

how many openings/duct does the sublingual gland have?

A

10-30 separate openings

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20
Q

how many openings/duct does the sublingual gland have?

A

10-30 separate openings

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21
Q

where is the sublingual gland found?

A

the floor of the mouth, grooving the medial aspect of the mandible.

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22
Q

boundaries of the oral cavity

A

extends from the lips to the oropharyngeal isthmus.

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23
Q

where is the vestibule of the oral cavity

A

slit like opening between the gums/teeth and the lips/cheek

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24
Q

where is the oral cavity proper?

A

within the alveolar arches

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25
Q

boundaries of the oral cavity proper

A

roof: hard and soft palate
floor: anterior 2/3 of the tongue and the reflection of the mucous membrane off the tongue to the gums.

26
Q

frenulum of the tongue is a ?

A

midline fold of mucous membrane from the tongue down onto the floor

27
Q

orifice of the sublingual duct?

A

on the submandibular papillae on either side of the frenulum

28
Q

sublingual fold?

A

sublingual gland under the mucous membrane

29
Q

the tongue is a mass of skeletal muscle with a ___ ___ ___ dividng it into rt/lt halves.

A

median fibrous septum

30
Q

functions of the tongue

A

taste, mastification, swallowing, speech.

31
Q

what is the tongue anchored to?

A

the styloid process, hyoid bone, mandiblem and pharynx

32
Q

the tongue has two parts, what are they?

A

the oral and pharyngeal part

33
Q

oral part exhibits?

A

tip of tongue: rest against incisors
margin of the tongue: related to gums and teeth
dorsum of the tongue

34
Q

the dorsum of the tongue is convex and divided into anterior 2/3 and posterior 1/3 by what?

A

the sulcus terminalis.

35
Q

the median pit at the apex of the “V” of the sulcus terminalis is called the?

A

foramen cecum that marks the opening of the thyroglossal duct which is the spot where the thyroid descends in as an epithelial invagination.

36
Q

the epithelium of the dorsum of the tongue exhibits what? and what are the four types.

A

lingual papillae

  1. filiform
  2. fungiform
  3. curcum vallate
  4. foliate
37
Q

the filiform lingual papilla is the most _____ and has ____ tips.

A

numerous and kertinized tips. (food texture) no taste buds

38
Q

fungiform is found where on the tongue?

A

apex

39
Q

do the fungiform have tastebuds and if so where are they found?

A

yes, on lateral aspects

40
Q

where can you find the circum vallate ? tastebuds?

A

numberes from 3-14 in a row anterior to the sulcus terminalis. they have taste buds on their lateral aspects

41
Q

foliate found where?

A

leaf-like and located along the posterior margin of the tongue.

42
Q

the phayrngeal part of the tongue faces ___ and forms the anterior wall of the ___

A

posteriorly, oropharynx.

43
Q

the surface of the pharyngeal part of the tongue is what in comparison to the oral part?

A

smoother, but still contains bumps due to the lymphoid follicles projecting from the lingual tonsils.

44
Q

the pharyneal part of the tongue have NO what

?

A

lingual papillae

45
Q

the mucous membrane of the pharyngeal portion of the tongue reflect posteriorly over onto the anterior aspect of the epiglottis forming three folds,, what are they>

A

a single median glossoepiglottal fold and two lateral glossoepiglotial folds.

46
Q

the pockets inbetween the mucousal folds are pocket like and referred to as the ?

A

epiglottic valleculae

47
Q

intrinsic musculature of the tongue is responsible for?

A

the form and shape of the tongue

48
Q

intrinis musculatrue is ___ __ arranged into thick bundles of fibers oriented in several planes. what are they?

A

skeletal muscles

superior, inferior longitudinal, transverse and vertical

49
Q

the tongue is the only place in the body where skeletal muscle bundles are oriented at ___ to one another

A

90 degree angles.

50
Q

4 pairs of extrinsic muscles of the tongue are?

A

genioglossus
hyoglossus
styloglossus
palatoglossus

51
Q

the genioglossus is fan shape and extends from what ?

A

extends from the superior genial tubuercle up into the muscle mass of the tongue

52
Q

what does the genioglossus do ?

A

pulls the tongue forward to protrude the tip and depress the medial region to make the surface concave

53
Q

the hyoglossus is flat, quadrangular muscle extending from ?

A

the hyoid on both sided to the tongue.

54
Q

action of the hyoglossus>

A

it is a depressor that can retract the tip of the tongue.

55
Q

what two things pass deep the the posterior border of the hyoglossus>

A

CN IX and lingual a

56
Q

styloglossus arises from the? and passes where? action?

A

arises from the styloid process and passes to the lateral aspect of the tongue, it is a retractor.

57
Q

palatoglossus passes up into the ____ within the _____ fold.

A

soft palate, palatoglossus fold.

58
Q

what does the palatoglossus restrict?

A

the oropharyngeal isthmus by bringing the two anterior pillars together in the midline closing off the oral cavity of the oropharynx.

59
Q

what is the action of the palatoglossus ?

A

elevates the roof of the tongue

60
Q

the pharyngeal plexus is formed by what nerves?

A

pharyngeal branch of CN X, glossopharyngeal, post gang sympathetic fibers, from superior cervical ganglion.

61
Q

blood supply of the tongue is the

A

lingual a

62
Q

lymphatic drainage of the tongue: tip, anterior 2/3, posterior 1/3

A

tip” submental nodes

ant: submandibular and deep cervical nodes
posterior: deep cervical nodes

63
Q

where are the motor fibers of the pharyngeal plexus derived from?

A

the cranial root of the CN XI. and distributed to all muscles of the pharynx except for the stylopharngeus CN IX, and tensor palati v3. by CN X

ANA exam 4 (4 decks)

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