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Oral Biology 1 > Salivary Glands > Flashcards

Salivary Glands Flashcards

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1
Q

What are examples of different oral fluids

A 
Saliva
Gingival crevicular fluid
Oral Bacteria
Food debris
Epithelia cells
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2
Q

What are the protective functions of oral fluids

A 
Cleansing
Mucosal protection
Buffering
Remineralisation
Antimicrobial
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3
Q

What are the digestive functions of oral fluids

A

Taste
Contains digestive enzymes
Lubricates bonus for chewing and swallowing

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4
Q

What is a symptom for salivary gland disease

A

Xerostomia (dry mouth)

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5
Q

What can reduced salivary flow cause

A

Increased incidence of dental caries specifically on the buccal and labial surfaces

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6
Q

Are salivary glands endocrine or exocrine

A

Exocrine

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7
Q

What are the major (paired) salivary glands

A

Parotid
Submandibular
Sublingual

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8
Q

What are the minor salivary glands

A

Buccal (in cheek)
Labial (in lip)
Lingual (in tongue)
Palatial (in hard and soft palate)

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9
Q

What type of secretions does the parotid gland secrete

A

Serous

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10
Q

What type of secretions does the submandibular gland secrete

A

Mixed (both serous and mucous)

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11
Q

What type of secretions does the sublingual gland secrete

A

Mucous

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12
Q

What type of secretions does the buccal gland secrete

A

Mucous

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13
Q

What type of secretions does the labial gland secrete

A

Mucous

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14
Q

What type of secretions does the lingual gland secrete

A

Mixed (both serous and mucous)

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15
Q

What is gingival crevicular fluid

A

Crevicular of sulcular fluid form epithelium lining the gingival crevice
Little found in healthy gingivae but flow increases with inflammation - gingivitis

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16
Q

How much is the daily salivary flow

A

Average of 500-700ml

17
Q

When does the parotid gland stop functioning

A

When sleeping

18
Q

What factors affect unstimulated salivary flow rate

A 
State of hydration
Previous stimulation
Circadian rhythm
Circannual rhythm
Medications
Salivary gland disease
19
Q

What are the functions of fluoride ions in saliva

A

Antibacterial
Forms fluroapatite
Promotes remineralisation

20
Q

What is the function of calcium and phosphate ions in saliva

A

Remineralisation

21
Q

What is the function of Thiocyanate (SCN) ions in saliva

A

Antibacterial

22
Q

What is the function of bicarbonate ions in saliva

A

Buffering

23
Q

How does bicarbonate ions work as salivary buffers

A

Effective at high flow rates when [HCO3] is high

24
Q

When are phosphate ions important as salivary buffers

A

Important at rest

25
Q

What effects do proteins have as salivary buffers

A

Limited effect as main buffering action occurs at pH<5

26
Q

How does bacterial NH3 act as a salivary buffer

A

Has a role in buffering plaque acid

27
Q

What is salivary composed of

A

Inorganic

  • Water - 99.5%
  • Ions - 0.2%

Organic

  • Mainly proteins - 0.3%
  • Carbohydrates of lipids

Oral Biology 1 (11 decks)

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