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Anatomy > The Oral Cavity > Flashcards

The Oral Cavity Flashcards

1
Q

oral cavity:

consists of two parts:

  • ___: cleft separating the lips & cheeks from the gums & teeth
  • ___: everything else
A

vestibule

oral cavity proper

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2
Q

oral cavity:

the mucous membrane of the oral cavity is lined by (keratinized/non-keratinized), stratified, squamous epithelium, except for the gums & hard palates, which are (keratinized/non-keratinized)

the oral cavity proper is the space b/n the upper & lower ___ arches (___ & ___ process) & the teeth

A

non-keratinized
keratinized

dental arches
maxillary & mandibular alveolar processes

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3
Q

oral cavity:

the roof is formed by the ___

the floor is mostly ___ & is largely occupied by the ___

A

hard palate

muscular
tongue

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4
Q

oral cavity:

the vestibule communicates w/ the exterior via the ___ fissure b/n the ___

the oral cavity proper communicates posteriorly w/ the ___ via the ___, which passes b/n the palatoglossal arches & the tongue

A

oral fissure
lips

oropharynx
oropharyngeal isthmus

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5
Q

oral cavity:

___ & ___: connect the upper & lower lips to the alveolar processes

A

upper & lower labial frenual

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6
Q

oral cavity:

___: midline fold connecting the tongue to the floor of the mouth

A

lingula frenulum

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7
Q

oral cavity:

___: openings of the submandibular ducts into the floor of the mouth opposite the lingual frenulum

A

sublingual caruncle (papilla)

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8
Q

oral cavity:

___: formed by the sublingual glands running in the direction of the sublingual caruncle (papilla)

small ducts of sublingual glands open along the ___

A

sublingual folds

folds

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9
Q

oral cavity:

___: lie on either side of the lingual frenulum

A

deep lingual veins

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10
Q

oral cavity:

___: opening of the parotid duct (stenson’s duct) into the vestibule opposite the second upper molar tooth

A

parotid papilla

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11
Q

the tongue:

mobile mass of (smooth/skeletal/cardiac) muscle covered by mucous membrane

anterior two-thirds (___) lies in the ___

posterior one-third (___) lies in the ___

A

skeletal

body
oral cavity

root
oropharynx

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12
Q

the tongue:

___: inverted v-shaped groove separating the anterior two-thirds from the posterior one-third of the tongue

___: located at the junction of the two limbs of the sulcus terminalis (site of the embryonic thyroglossla duct)

A

sulcus terminalis

foramen cecum

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13
Q

the tongue:
lingual papillae:

upfoldings of the mucous membrane covering the (dorsal/ventral) surface of the (anterior two-thirds/psosterior one-third) of the tongue

four types (4)

A

dorsal
anterior two-thirds

filiform papillae
fungiform papilla
foliate papillae
circumvallate papilla

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14
Q

the tongue:
lingual papillae:
filiform papillae:

conical shaped projections arranged in (columns/rows) which diverge from the ___ & run parallel to the ___

(have/lack) taste buds (along surface from CN ___)

A

rows
midline
sulcus terminalis

lack

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15
Q

the tongue:
lingual papillae:
fungiform papillae:

scattered throughout the ___ papillae

more common along the (tip/back) of tongue

appear as red dots due to rich ___ supply & ___

(apex/base) large & rounded, (apex/base) narrower

(have/lack) taste buds (along surface from CN ___)

A

filiform papillae

tip

blood supply
transparency

apex
base

have
CN VII

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16
Q

the tongue:
lingual papillae:
foliate papillae:

(medial/lateral) upfoldings of the tongue

(well/poorly) developed in humans

(have/lack) taste buds (along lateral surface from CN ___)

A

lateral

poorly

have
CN VII

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17
Q

the tongue:
lingual papillae:
circumvallate papillae:

about a dozen or so arranged in a row just in front of the ___

much (smaller/larger) than fungiform or foliate types

(have/lack) taste buds (numerous along the sides from CN ___)

A

sulcus terminalis

larger

have
CN IX

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18
Q

the tongue:
posterior one-third of the tongue:

___ tonsils on surface

___: reflections of mucosa onto the epiglottis

___: depressions b/n the glossoepiglottic folds, contain some taste buds (CN ___)

A

lingual

median & lateral glossoepiglottic folds

valleculae
CN X

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19
Q

the tongue:
nerve innervation of the tongue (CN ___):

general sensation (e.g., touch, tepmerature, pain) for the anterior two-thirds of the tongue: ___

taste for the anterior two-thirds: ___

general sensation & taste for the posterior one-third of the tongue: ___

general sensation & taste in the valleculae of the tongue: ___

motor to all muscles of the tongue: ___ (except the palatoglossus: ___)

A

lingual nerve (CN V3)

chorda tympani (CN VII)

lingual branch (CN IX)

internal laryngeal nerve (CN X)

hypoglossal nerve (CN XII)
(CN X)
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20
Q

the tongue:
blood supply:

___ artery & branches (3)

A

lingual artery

  • dorsal lingual
  • sublingual branch
  • deep lingual
21
Q

the tongue:
blood supply:
lingual artery:

originates from the ___ artery just behind the ___ of the ___ bone

passes (superficial/deep) to the hyoglossus muscle

A

external carotid artery
greater horn of the hyoid bone

deep

22
Q

the tongue:
blood supply:
lingual artery:
dorsal lingual:

passes (upward/downward) to supply the ___ of the tongue

A

upwrd

dorsum

23
Q

the tongue:
blood supply:
lingual artery:
sublingual branch:

passes forward b/n the ___ & ___ muscles to supply these, the ___ muscle, & the ___ gland

A

mylohyoid & genioglossus muscles

geniohyoid muscle

sublingual gland

24
Q

the tongue:
blood supply:
lingual artery:
deep lingual:

runs forward supplying the (upper/lower) surface of the tongue

accompanied by the ___ vein

A

lower

deep lingual vein

25
Q

the tongue:
blood supply:
venous drainage:

the deep lingual vein starts out w/ the ___ artery, but becomes separated by the ___ muscle

the deep lingual & sublingual veins form the ___

the dorsal lingual vein joins the above to form the ___ vein which opens into the ___ vein

A

deep lingual artery
hyoglossus muscle

vena comitans nervi hypoglossi

lingual vein
internal jugular vein

26
Q

muscles of the tongue (6)

A 
intrinsic
extrinsic
genioglossus
hyoglossus
styloglossus
palatoglossus
27
Q

muscles of the tongue:
intrinsic muscles:

located entirely within the ___ & have no ___ attachments

arranged as (longitudinal/circular), transverse, & (horizontal/vertical) sheets

responsible for major ___ changes in speech & swallowing

A

tongue
bony

longitudinal
vertical

shape

28
Q

muscles of the tongue:
extrinsic muscles:

arise from ___ attachments (inside/outside) the tongue

A

bony

outside

29
Q

muscles of the tongue:
genioglossus muscle:

nerve: ___

action:

  • pulls tongue (forward/backward) & (protrudes/retracts) it
  • assists in creating a central furrow during ___
  • anterior fibers (protrude/retract) the (protruded/retracted) tip of the tongue
A

hypoglossal nerve

forward
protrudes

swallowing

retract
protruded

30
Q

muscles of the tongue:
hyoglossus muscle:

nerve: ___
action: (elevates/depresses) the tongue

A

hypoglossal nerve

depresses

31
Q

muscles of the tongue:
styloglossus muscle:

nerve: ___

action:

  • pulls tongue (upward/downward) & (forward/backward)
  • assists in creating a central furrow during ___
A

hypoglossal nerve

upward
backward

swallowing

32
Q

muscles of the tongue:
palatoglossus muscle:

nerve: ___ via ___ plexus

action:

  • (elevates/depresses) the palate
  • moves the ___ arch toward the midline
  • (elevates/depresses) the back of the tongue
A

vagus nerve via pharyngeal plexus

elevates

palatoglossal

elevates

33
Q

related muscles of the tongue (4)

A

digastric
mylohyoid
geniohyoid
stylohyoid

34
Q

related muscles of the tongue:
digastric:

nerve:

  • anterior belly: ___
  • posterior belly: ___

action:

  • (elevates/depresses) hyoid
  • (elevates/depresses) mandible
A

V3
VII

elevates
depresses

35
Q

related muscles of the tongue:
mylohyoid:

forms sling across the (roof/floor) of the mouth

nerve: ___

action:

  • (raises/lowers) the hyoid & the tongue (swallowing)
  • (elevates/depresses) the mandible
A

floor

V3

raises
depresses

36
Q

related muscles of the tongue:
geniohyoid:

(superficial/deep) to the mylohyoid

nerve: ___ via ___

action:

  • (rasies/lowers) the hyoid
  • (elevates/depresses) the mandible
A

deep

C1 via the hypoglossal nerve

raises
depresses

37
Q

related muscles of the tongue:
stylohyoid:

closely applied to the ___

nerve: ___
action: (raises/lowers) the hyoid & pulls it (anteriorly/posteriorly)

A

posterior belly of the digastric

VII

rasies
posteriorly

38
Q

the submandibular gland:

large u-shaped gland, wraps around the (anterior/posterior) free border of the ___ muscle

has ___ & ___ parts, which are continuous over the above border

A

posteroir
mylohyoid muscle

superficial
deep

39
Q

the submandibular gland:
superficial part:

wedged b/n the ___ of the ___ & the ___ muscle

laterally, it is related to the ___ fossa

A

body of hte mandible
mylohyoid muscle

submandibular fossa

40
Q

the submandibular gland:
deep part:

lies in the space b/n the ___ muscle (lateral) & the ___ & ___ muscles (medial)

A

mylohyoid muscle

styloglossus & hyoglossus muscles

41
Q

the submandibular gland:
submandibular duct:

emerges from the (superficial/deep) part of the gland

crossed laterally by the ___ nerve, then runs anteirorly b/n the ___ gland & the ___ msucles

enters the floor of the mouth at the ___ beside the base of the ___

A

deep

lingual nerve
sublingual gland
genioglossus muscles

sublingual caruncle (papilla)
lingual frenulum
42
Q

the sublingual glands:

the most (superficial/deep) structure in the (roof/floor) of the mouth

almond shaped gland which forms the ___ folds

A

superficial
floor

sublingual folds

43
Q

the sublingual glands:
relations:

superior: ___ membrane
inferior: ___ muscle
lateral: ___ fossa of the ___
medial: ___ duct, ___ nerve, ___ muscle

A

mucous membrane

mylohyoid muscle

sublingual fossa of the mandible

submandibular duct
lingual nerve
genioglossus

44
Q

the lingual nerve:

arises from the ___ nerve in the ___ fossa & is joined by the ___ from the ___ nerve

A

mandibular nerve (V3)
infratemporal fossa
chorda tympani
facial nerve (VII)

45
Q

the lingual nerve:

during its course, the lingual nerve is closely related to the ___ tooth & can be damaged during ___ of the tooth

passes forward across the ___& ___ muscles

A

third molar tooth
extraction

styloglossus & hyoglossus muscles

46
Q

the lingual nerve:

the ___ ganglion is suspended from the lingual nerve as it lies on the ___ muscle, above the deep part of the ___ gland

crosses the lateral surface of the ___ duct, then winds below it, & upward on its (medial/lateral) side

A

submandibular ganglion
hyoglossus muscle
submandibular gland

submandibular duct
medial side

47
Q

important relations of the hyoglossus muscle:
deep to the muscle:

___ artery
___ nerve

A

lingual artery

glossopharyngeal nerve

48
Q

important relations of the hyoglossus muscle:
superficial to the muscle (anterior portion):

superior level (lateral to medial or superficial to deep):
___ gland
___ duct
___ nerve

inferior level:
___ nerve
___

A

sublingual gland
submandibular duct
lingual nerve

hypoglossla nerve
vena comitantes nervi hypoglossi

Anatomy (66 decks)

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