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Oral Histology > Salivary Glands > Flashcards

Salivary Glands Flashcards

0
Q

Deficiency in saliva would cause? (2)

A
  • Difficulty in eating, swallowing, speech
  • Prone to infection and caries
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1
Q

The most important function of the salivary glands?

A

To maintain the well being of the mouth

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2
Q

Production rate of saliva per hour?

Per day?

A

200ml/hr

1-1.5L/day

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3
Q

Component of saliva?

A
  1. 5% water
  2. 5% organic and inorganic
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4
Q

A major salivary enzyme that helps digest carbohydrate?

A

Amylase or ptyalin

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5
Q

pH of saliva?

A

5.6-7.6 (6.8)

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6
Q

Functions of saliva? (6)

A
  • Protection
  • Buffering
  • Digestion
  • Taste
  • Antimicrobial
  • Maintenance of tooth integrity
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7
Q

Provides lubrication and forms a barrier against noxious stimuli and minor trauma?

A

Mucin

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8
Q

Formed by calcium binding proteins which serves as a coating over the teeth?

A

Salivary pellicle

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9
Q

Which content of saliva provides barrier? Serous or mucous?

A

Mucous

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10
Q

Salivary content which agglutinates bacteria?

A

Antibodies

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11
Q

Hydrolyses the cell wall of bacteria?

A

Lysozyme

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12
Q

Binds to iron to make them unavailable to microorganism?

A

Lactoferrin

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13
Q

Enamel maturation?

A
  • Low permeability
  • Hight resistance to caries
  • High surface hardness
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14
Q

Classification of salivary glands according to nature of secretion?

A

Exocrine

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15
Q

Classification of salivary glands according to behavior?

A

Merocrine

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16
Q

Classification of salivary glands according to morphology?

A

Compound tubuloacinar

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17
Q

Classification of salivary glands according to type of secretory cells? (3)

A
  • Purely serous
  • Purely mucous
  • Mixed
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18
Q

How do you describe the secretion of saliva?

A

Intermittent

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19
Q

Parotid duct?

A

Stensen’s duct

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20
Q

Submandibular duct?

A

Wharton’s duct

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21
Q

Sublingual duct?

A

Bartholin’s duct or Rivinian duct

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22
Q

Submandibular gland:

Type of secretion?

Amount?

Origin?

Development?

A
  • Mixed: 3/4 serous, 1/4 mucous
  • 60-65%
  • Endoderm
  • 6th week
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23
Q

Sublingual gland:

Type of secretion?

Amount?

Origin?

Development?

A
  • Mixed: 2/3 mucous, 1/3 serous
  • 10%
  • Endoderm
  • 8-12th week
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24
Q

Parotid gland:

Type of secretion?

Amount?

Origin?

Development?

A
  • Serous
  • 25%
  • Ectoderm
  • 4-6th week
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25
Q

It produces the highest amount of saliva?

A

Submandibular gland

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26
Q

Intrinsic glands that discharge saliva continuously?

A

Minor salivary glands

27
Q

Minor salivary glands are found in what layer?

A

Lamina propria or submucosa

28
Q

Function of minor salivary glands?

A

To keep the mucosa moist

29
Q

Serous of mucous: labial glands?

A

Predominantly serous

30
Q

Serous or mucous: buccal glands?

A

Predominantly mucous

31
Q

Serous or mucous: palatine glands?

A

Purely mucous

32
Q

Glands found in the anterior fold of tissue in front of palatine tonsil?

A

Glossopalatine glands

33
Q

Serous or mucous: glossopalatine glands?

A

Purely mucous

34
Q

3 classes of salivary ducts?

A
  • Intercalated ducts
  • Striated ducts
  • Terminal excretory ducts
35
Q

Cells lining the intercalated ducts?

A

Low cuboidal cells

36
Q

Cells lining the striated ducts?

A

Columnar cells with microvilli

37
Q

What makes the appearance of striated ducts?

A

Infolded basal membrane

38
Q

Ducts which makes the secretion a more hypotonic solution?

A

Striated ducts

39
Q

Ducts found within the connective tissue septa?

A

Excretory ducts

40
Q

Lining cells of the excretory ducts?

A

Pseudotratified columnar, with stratified columnar

41
Q

Ducts that alters the electrolyte concentration of saliva?

A

Excretory ducts

42
Q

Cells of the salivary glands? (4)

A
  • Serous cells
  • Mucous cells
  • Myoepithelial cells
  • Serous demilune
43
Q

Cells that secrete mostly protein?

A

Serous cells

44
Q

Serous cells contain ______?

Mucous cells contain ______?

A

Zymogen granules

Mucin

45
Q

Precursor of amylase?

A

Zymogen granules

46
Q

Cells high in carbohydrates?

A

Mucous cells

47
Q

The secretory material of mucous cells is contained in?

A

Mucigen droplets

48
Q

Octopus like cells surrounding the acini?

A

Myoepithelial cells

49
Q

It gently squeezes the acini to aid in the secretory process?

A

Myoepithelial cells

50
Q

Crescent shaped cells capping some mucous acini?

A

Serous demilune

51
Q

Glands that flushes out debris from the furrow of taste buds?

A

Von ebners gland

52
Q

Serous or mucous: von ebner’s gland?

A

Serous

53
Q

Age changes in salivary glands? (4)

A
  • More adipose
  • More fibrosis
  • Accumulation of lymphocytes
  • Presence of oncocytes
54
Q

True or false. Oncocytes may be found in excretory ducts?

A

False. Only in acini, intercalated and striated ducts

55
Q

These cells may give rise to neoplasms?

A

Oncocytes

56
Q

Epithelial cells characterized by an excessive amount of mitochondria?

A

Oncocytes

57
Q

Amount of saliva secreted during the night?

A

10ml

58
Q

True or false. Decrease in saliva flow rate can cause calculus which can result to caries and periodontal disease?

A

True

59
Q

Salivary stones?

A

Sialoliths

60
Q

Where does sialoliths frequently occurs?

A

In submandibular ducts

61
Q

Saliva-filled cysts formed due to obstruction of salivary ducts?

A

Retention cysts

62
Q

Retention cysts mostly found in minor salivary glands?

A

Mucocele

63
Q

Retention cysts found in the floor of the mouth?

A

Ranula

64
Q

Which is bigger: mucocele or ranula?

A

Ranula

65
Q

Radiographs for salivary glands and ducts?

A

Sialogram

69
Q

Serous or mucous: which is darker?

A

Serous

Oral Histology (11 decks)

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