Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biomedical Science 1 > Oral Mucosa > Flashcards

Oral Mucosa Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What is the oral mucosa?

A

A moist lining which almost continuously lines the oral cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the main components of an oral mucosa?

A
  1. Epithelium - SSK/SSNK
  2. Lamina propria - Collagen type I and III
  3. Submucosa - Loose CT found in cheeks, lips and parts of hard palate
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are 5 functions of the oral mucosa?

A
  1. Protection against compressive and shearing forces
  2. Barrier to microorganisms#
  3. Immunological defence
  4. Sensitivity
  5. Reflexes e.g. swallowing and retching
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the two areas of the oral mucosa?

A
  1. Outer vestibule - Bound by lips and cheeks

2. Oral cavity proper - Bound by alveolar bone and gingiva, hard and soft palates and floor of the mouth and tongue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Name 3 types of mucosa found in the oral cavity

A
  1. Lining
  2. Masticatory
  3. Specialised
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What 5 places is lining mucosa found?

A
  1. Cheeks
  2. Lips
  3. Ventral surface of tongue
  4. Floor of mouth
  5. Soft palate
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What 2 places is masticatory mucosa found?

A
  1. Gingiva

2. Hard palate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Where is specialised mucosa found?

A

Dorsum of tongue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What lines lining mucosa?

A

Stratified squamous non-keratinising epithelium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Why does lining mucosa need a submucosa and lamina propria?

A

It is found in regions where a moveable base is needed i.e. during speech or mastication

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are 2 points of clinical relevance with regards to lining epithelium?

A
  1. An incision will tend to need sutures due to tissue movement
  2. Injections are less painful
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What lines masticatory mucosa?

A

Stratified squamous keratinising epithelium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What gives masticatory mucosa a firm base?

A

Highly interdigitated epithelium and lamina propria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are 2 points of clinical relevance with regards to masticatory epithelium?

A
  1. Sutures are rarely needed as little tissue movement

2. Injections are more painful

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

From the deepest layer to the most superficial layer, what are the 4 layers of the epithelium of oral mucosa?

A
  1. Stratum basale
  2. Stratum spinosum
  3. Stratum granulosum
  4. Stratum corneum
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the main cell of mucosal epithelium?

A

Keratinocyte

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Name 3 other cells which can be found in mucosal epithelium

A
  1. Melanocytes
  2. Langerhans cells
  3. Merkel cells
18
Q

How does oral melanoma arise?

A

Mutated melanocytes in the basal layer of the mucosal epithelium

19
Q

What projections cover the dorsal surface of the tongue?

A

Lingual papillae

20
Q

What are 4 types of lingual papillae which can cover the tongue?

A
  1. Filiform - Narrow and conical
  2. Fungiform - Mushroom-shaped
  3. Circumvallate - Wall-like
  4. Foliate - Leaf-shaped
21
Q

What is the function of filiform papillae?

A

Provide grip between tongue and food

22
Q

What epithelium lines filiform papillae?

A

Thick layer of keratinised epithelium

23
Q

What is the function of fungiform papillae?

A

Contain taste buds

24
Q

What epithelium lines fungiform papillae?

A

Thin layer of keratinised epithelium

25
Q

What are circumvallate papillae?

A

Raised, rounded structures located anterior to sulcus terminalis, surrounds by a trench containing taste buds

26
Q

What are filiform papillae found on the tongue?

A

Cover entire surface of tongue

27
Q

What are 3 junctions found in the oral mucosa?

A
  1. Mucocutaneous - Skin and lips
  2. Mucogingival - Gingiva and alveolar muscle
  3. Dentogingival - Tooth and gingiva
28
Q

How does the epithelial thickness change at the mucocutaneous junction?

A

Thickness increases from external skin to internal mucosa

29
Q

What is found between the internal mucosa and external skin at the mucocutaneous junction?

A

Vermillion zone - Thin, keratinised epithelium with capillary loops in CT coming close to the surface

30
Q

What is the mucogingival junction?

A

Transition between thin, loose, moveable alveolar mucosa and thick, firm, tightly attached gingiva

31
Q

What are 2 major differences between gingiva and alveolar mucosa?

A
  1. Gingiva is keratinised

2. Gingiva is a paler pink colour

32
Q

What is the dentogingival junction?

A

The junction between the gingival tissue and tooth surface

33
Q

What are the 3 parts of the epithelium which make up the dentogingival junction?

A
  1. Free gingiva
  2. Sulcular epithelium
  3. Junctional epithelium
34
Q

What binds junctional epithelium to enamel of the tooth?

A

Basal lamina and hemidesmosomes

35
Q

What part of the tooth germ is the dentogingival junction derived from?

A

Enamel organ

36
Q

What is a potential issue with the gingival sulcus?

A

Plaque formation can occur within the sulcus

37
Q

Give a brief description of parotid glands

A

Branched acinar gland with exclusively serous cells

38
Q

Give a brief description of submandibular glands

A

Branched tubulo-acinar gland with both serous and mucous cells

39
Q

What is the function of serous demilunes in the submandibular gland?

A

Secrete lysosomes which hydrolyse bacterial walls

40
Q

Give a brief description of sublingual glands

A

Branched tubulo-acinar gland with mucous cells and serous cells occurring exclusively as demilunes

Biomedical Science 1 (19 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions