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oral cavity - BDS 1 > salivary glands :) > Flashcards

salivary glands :) Flashcards

1
Q

the major salivary glands and where are they

A

parotid - side of face
sublingual - underneath tongue
submandibular -underneath the tongue

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2
Q

what is unstimulated saliva dominated by

A

submandibular components (larger than sublingual)

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3
Q

what glands are continuously active

A

sublingual
submadibular
minor

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4
Q

activity of parotid

A

mainly inactive

produce saliva upon stimulation

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5
Q

whole saliva

A 
salivary gland secretions 
blood 
oral tissues
microorganisms 
food remnants
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6
Q

what is the salivary glands composed of

A

two epithelial tissue
acinar cells
ducts

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7
Q

ducts

A

collecte to form large ducts entering the mouth
carry saliva out of gland and into the mouth
has channels and transporters

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8
Q

types of acini

A

serous acini

mucous acini

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9
Q

serous acinus

A

dark staining
nucleus in basal third
small central duct
secrete water and a amylase

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10
Q

where is serous acini found

A

parotid

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11
Q

mucous acini

A

pale staining
nucleus in base
large central duct
secrete mucus

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12
Q

submandibular types of acini

A

mixed

referred as seromucous

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13
Q

sublingual types of acini

A

mixed

more mucous

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14
Q

types of ducts

A

interlobular ducts

main excretory ducts

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15
Q

interlobular ducts

A

come straight out of lobe and feed into lager excretory ducts

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16
Q

types of interlobular ducts

A

intercalated

striated

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17
Q

intercalated interlobular ducts

A

short narrow duct segments

cuboidal cells that connect acini to larger striated duts (i.e. as you move away from the acini cells)

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18
Q

striated interlobular ducts

A

appear striated at basal end
major site for reabsportion of NaCl
basal membrane highly folded into microbial for AT of HCO3

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19
Q

what do ducts do to the saliva

A

alter saliva as it moves through the system

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20
Q

what is primary saliva

A

NaCl rich

isotonic plasma like fluid secreted by acini

21
Q

how is the saliva altered by the duct syste

A

electrolyte composition modified
ducts secrete K+ and HCO£-, reabsorb Na+ and Cl-
epithelium of the duct prevents water movement so final saliva becomes hypotonic

22
Q

what is exocrine secretion triggered by

A

primarily by sympathetically

secondarily parasympathetic

23
Q

pathways of secretion

A

major regulates/minor regualted

constituitive

24
Q

major/minor regulated pathway

A

external stimulus dependant

proteins stored in secretory granules to stimulation being directly apically into saliva

25
Q

constitutive section pathway

A

non directional with continuous secretion of protien

not modulated by external stimuli

26
Q

what is the superficial outline of parotid glands

A

triangular outline between zygomatic arch and sternocleidomastoid, ramps of mandible and medial pterygoid

27
Q

what is the parotid duct

A

stensons duct

28
Q

where does stensons duct pass

A

crosses masseter, pierces buccinator and enters oral cavity at molar 7

29
Q

where can the parotid duct be palpated

A

palpate a fingers breadth beneath zygomatic arch

30
Q

what structures pass through the parotid gland

A

external carotid artery and terminal branches
retromandibular vein
facial nerve and branches to muscles of facial expression

31
Q

submandibular glands

A

2 lobes separated by mylohyoid muscle

  • large superficial lobe
  • smaller deep lobe in the floor of mouth
32
Q

duct of submandibular

A

whartons duct

33
Q

where does the whartons duct run

A

begins in superficial lobe
wrap around free posterior border of mylohyoid
runs on floor of muth
empties into the OC at sublingual papillae

34
Q

serous demilunes

A

serous acini arranged as a present shaped groups of glandular cells at the bases of mucous acini

35
Q

sublingual glands

A

in the floor of the mouth between mylohyoid muscle and oral mucosa of floor of mouth

36
Q

duct of sublingual glands

A

no large duct, drains into submandibular or small ducts

- not possible to get sub mandibular and sublingual saliva

37
Q

where are minor salivary glands

A 
concentrated in
- buccal
-labial
-palatal
- lingual
also found
- superior pole of tonsils
- tonsillar pillars
- base of tongue
38
Q

what are all minor salivary glands

A

mucous expect for serous glands of von ebner

39
Q

minor salivary gland ducts

A

lack a branching network of draining ducts

- each salivary unit has its own simple duct

40
Q

how to collect saliva from each of the glands

A

paritid
- cotton wool rolls in the buccal sulcus
submandibular/sublingual/minor
- saliva ejector

41
Q

what tooth surfaces are most prone to plaque accumulation

A

those adjacent to the ducts
buccal surfaces of upper molars
lingual surfaces of lower anterior teeth

42
Q

nervous stimulation of the glands

A

stimulation of para nerves causes production of saliva

sympathetic is selective, causes secretion of protein/glycoprotein

43
Q

salivary gland disease and dysfunction

A

obstructive
inflammaotroy
degernerative
drug effects

44
Q

obstructive salivary gland disease

A
  • Stones in saliva glands
  • Saliva contains calcium and phosphate ions that can form salivary calculi
  • Most often in submandibular
  • Block duct at bend around mylohyoid or at exit of sublingual papillae
45
Q

inflammatory salivary gland disease

A
  • Infection secondary to blockage
  • Eg mumps
  • Pain especially over parotid because capsule does not allow much enlargement
  • Swelling of glands
46
Q

degernative salivary gland disease

A
  • Complication of radiotherapy to head and neck for cancer treatment
  • Sjogrens syndrome
47
Q

xerostomia

A

may be consequence of cystic fibrerosisand sjogrens, medication, irratiation for cancers

48
Q

effects of salivary gland disfunction

A

below 50% normal flow, xerostomia
lower lubrication get oral function difficulty
lower OH grt poor pH control

49
Q

what does accumulation of plaque give

A

rampant dental caries
gingivitis
PDD

oral cavity - BDS 1 (66 decks)

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