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Ethmoid Bulla aka Oral Histology Exam 2 > 3 Regional Histology of Oral Mucosa > Flashcards

3 Regional Histology of Oral Mucosa Flashcards

1
Q

where can you find LINING mucosa

A
  • Labial
  • Buccal
  • Alveolar
    mucosa
  • Soft palate
  • Ventral tongue
  • Floor of mouth
  • Oropharynx
  • Posterior 1/3
    of tongue
  • Epiglottis and
    larynx
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2
Q

where can you find SPECIALIZED mucosa

A

dorsal surface of ant 2/3 tongue AND vermillion zone

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3
Q

where can you find MASTICATORY mucosa

A

Hard palate (ant and post)
gingiva - free and attached
interdental papilla

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4
Q

what is mucogingival fold

A

transition from attached gingiva to alveolar mucosa

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5
Q

where is the mucoperiosteum located

A

palatal raphe and attached gingiva

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6
Q

what anatomical structure does the developmental origin/precursor 1 PA MAXILLARY PROCESS give rise to

A

upper lateral lip

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7
Q

what anatomical structure does the developmental origin/precursor FN - INTERMAXILLARY SEGMENT give rise to

A

philtrum

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8
Q

what anatomical structure does the developmental origin/precursor 1 PA MANDIBULAR PROCESS

A

lower lip

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9
Q

what innervates the mucosa of the upper lateral lip

A

V2 trigeminal - infraorbital

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10
Q

what innervates the mucosa of the philtrum

A

V2 trigeminal - infraorbital

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11
Q

what innervates the mucosa of the lower lip

A

V3 trigeminal - mental

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12
Q

what are the 3 regions on the lip

A
  1. outer cutaneous skin –> SSK
  2. vermillion zone –> SSK and mucocutaneous junction
  3. inner labial –> lining mucosa
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13
Q

what germ layer forms the epithelial of mucosa in the lip

A

ECTODERM! outside

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14
Q

what are are musculofibrous folds that function as valves (sphincter) of the oral fissure

A

lips

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15
Q

what type of epi is the outer cutaneous region and what is found there (glands, etc)

A

THIN SSK
hair follicles
sebaceous glands
sweat glands
vermillion border -> mucocutaneous junction

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16
Q

what is the vermillion zone

A

transition zone is located in the area between the dry skin and the wet
mucous membrane.

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17
Q

what type of epi is the vermillion zone and what is found there (glands, etc)

A

thicker SSK than face
NO glands
many sensory receptors - Meissners
deep CT papillae w/ lots of vascularity (red color)

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18
Q

what type of epi is the intermediate zone and what is found there (glands, etc)

A

Transition from from SSK to SSPK
Stratum granulosum disappears with SSPK

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19
Q

what is the intermediate zone

A

transition between vermillion zone and labial mucosa

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20
Q

what is the labial region (inner mucosa)

A

the labial surface

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21
Q

what type of epi is the labial region and what is found there (glands, etc)

A

Thick SSNK-lining mucosa
Well vascularized LP
Seromucous (mixed) minor salivary glands in submucosa

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22
Q

what muscle makes up core of lips

A

orbicularis oris muscle

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23
Q

boundaries of the buccal region (cheek)

A
  • Oral and mental regions anteriorly
  • Parotid region posteriorly
  • Zygomatic region superiorly
  • Inferior border of mandible inferiorly
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24
Q

what does the buccal region contain

A
  • Buccinator mainly
  • Buccal minor salivary glands
  • Buccal branches of maxillary artery and V3
  • Oral mucosa (Buccal)
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25
Q

histology features of cheek

A
  • Thick SSNK
  • Shallow rete ridges
  • Dense submucosa –> Attached to skeletal muscle and Location of minor salivary glands(mixed) and adipose (buccal fat pad)
  • Lining mucosa
26
Q

what are fordyce’s spots and where are they

A

in the cheek

-White to yellow in color grossly
* Sebaceous glands appear as clusters of larger, pale vacuolated cells with a central placed nucleus. In 81% of cases, the Fordyce spot opens directly onto the surface
* Not associated with hair follicles
* Functionunknown
* Located on the VZ,labial and buccal mucosa or angle of the mouth

27
Q

what type of glands are found in Fordyce’s spots

A

sebaceous glands

28
Q

what type of glands are found in the cheek

A

MIXED

29
Q

what is linea alba buccalis

A

reactive keratosis

30
Q

what does the developmental origin/precursor 1 PA maxillary process give rise to

A

lateral palatal shelves and secondary palate

31
Q

what does the developmental origin/precursor inter-maxillary segmental give rise to

A

primary palate

**definitive palate is the fusion of primary and secondary palate

32
Q

what are the four regions of the palate

A
  1. midline raphe
  2. anterior lateral
  3. posterior hard palate
  4. soft palate
33
Q

what mucosa is found in the midline raphe

A

masticatory mucosa and mucoperiosteum

34
Q

what mucosa is found in the anterior lateral

A

masticatory mucosa with adipose in submucosa

35
Q

what mucosa is found in the posterior hard palate

A

masticatory mucosa with mucous glands in submucosa

36
Q

what mucosa is found in the soft palate

A

lining mucosa

37
Q

what innverates the anterior palatine in region of incisors

A

branch of V2 -> nasopalatine n

38
Q

what innverates the ant and post hard palate

A

branch of V2 -> greater palatine n

39
Q

what innervates the soft palate

A

branch of V2 -> LESSER palatine n

40
Q

what GL is in the palate

A

ECTODERM for epi and mucous salivary glands!

41
Q

T/F

the anterior 2/3 of the hard palate is comprised of fibromuscular
tissue attached to posterior edge of hard palate

A

FALSE!!

anterior 2/3 of palate comprised of bone –> Palatine process of maxilla and horizontal plate of
palatine bone

42
Q

what is the posterior 1/3 of the palate (soft palate) comprised of

A

fibromuscular tissue attached to posterior edge of hard palate

43
Q

does each portion of the hard palate have 2 or 3 sides and what are they?

A

2!!

  1. nasal side -covered with respiratory epithelium (PSCC)
  2. oral side - covered with oral epithelium (extent of keratinization depends on location)
44
Q

3 regions of the hard palate

A
  1. Midline Raphe
  2. Anterolateral: Fatty zone
  3. Posterolateral: Glandular zone
45
Q

general features of hard palate

A
  • Covered with masticatory mucosa
  • Thick SSK to SSPK
  • Long rete ridges
  • Submucosa varies based on Location -> Traction bands
46
Q

in the midline of the hard palate, what type of epi/mucosa or features are present

A

Midline Region:
* SSK
* Deep rete ridges
* Mucoperiosteum present

47
Q

in the anterolateral region (AKA the fatty zone) of the hard palate, what type of epi/mucosa or features are present

A

Anterolateral Region: Fatty Zone :
* Epithelium folded into rugae
* SSK to SSPK
* Deep rete ridges and CT papillae
* Submucosa contains adipose tissue * CT contain neurovasculature

48
Q

what is known as the fatty zone

A

the anterolateral region of hard palate. FOR PROTECTION!

49
Q

in the posteriolateral region (AKA the glandular zone) of the hard palate, what type of epi/mucosa or features are present

A

Posteriolateral Region: Glandular Zone:
* SSPK to SSNK
* Masticatory mucosa
* Submucosa contain mucous glands
* Rete ridges transition from deep to flat

50
Q

what is known as the glandular zonw

A

posteriolateral region of hard palate

51
Q

what types of glands are in the posteriolateral region of hard palate

A

mucous glands (found in submucosa)

52
Q

features of soft palate

A
  • Thick SSNK
  • Lining mucosa
  • Shallow rete ridge:CT papillae interaction * Mucous glands present
  • Skeletal muscle present
  • Bone is ABSENT
53
Q

T/F in the soft palate, we have NO mucous glands or skeletal muscle but do have bone

A

FALSE

we DO have mucous glands or skeletal muscle but NO bone -> soft palate

54
Q

what type of epi is in the soft palate

A

THICK SSNK

55
Q

HSV-1 (herpes) is a recurring lesion occurring where and how is it transmitted

A

-Recurring lesions occur on the outer lips (most often) or within the oral cavity (palate gingiva or tongue)
-Transmission occurs through saliva or direct contact

56
Q

Following a primary infection in the oral mucosa epithelium, the ____________become the principal target of the herpes simplex virus.

A

trigeminal sensory neurons

57
Q

is herpes retrograde or anterograde transport

A

RETROGRADE

-Virus lies dormant in host cell until reactivated by stress or illness resulting in recurring herpetic lesions.
-Pattern of recurrence reflects dermatomal pattern

58
Q

what type of epi is in the posteriolateral region of the hard palate

A

SSPK - SSK

59
Q

what type of epi is in hte cheek

A

THICK SSNK

60
Q

what type of epi is in the vermillion zone

A

thicker than face SSK

61
Q

what type of epi is in the intermediate zone

A

transition from SSK to SSPK

62
Q

T/F

the labial region has thick SSNK lining mucosa

A

TRUE

Ethmoid Bulla aka Oral Histology Exam 2 (7 decks)

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