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Histology > Salivaray Glands > Flashcards

Salivaray Glands Flashcards

1
Q

How much saliva prod a day

A

600-1000ml

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2
Q

What are the thre major pairs of salivary glands

A

Parotid
Submand
Subling

Then minor

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3
Q

What is the rough location of parotid gland

A

Pyramidal shape with Apex below angle of mandible, posterior edge is near eam

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4
Q

Where does the parotid duct arise and terminate

A

Emerges form anterior border, passes over Masseter and pierces Buccinator p, emptying into oral cav on papilla opposite 2nd upper molar

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5
Q

What is embedded int he parotid gland

A

Externa, carotid artery
Retromandibilar vein
Facial nerve

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6
Q

What su the parasymp inv of parotid gland

A

Preganglionic - Glossopharyngeal –> lesser petrosal –> otic gang

Postganglionic - otic gang –> auriculotemporal –> parotid

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7
Q

Where is the submandibular gland roughly

A

Superficial part visible below inferior border of mandible, the gland wraps itself around posterior border of mylohyoid
Smaller deep portion

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8
Q

Where does the sub duct emerge etc

A

Form deep part of gland and passes forward to terminate on sublingual papillae at the base of lingual frenum

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9
Q

What is the parasymp inv of submandibular gland

A

Preganglionic - facial nerve –> chorda tympani –> lingual nerve –> submandibular ganglion

Postganglionic - submand gang –> submand gland

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10
Q

Where is the rough location of the sublingual glands

A

Almond shaped sits in sublingual fossa bounded above by oral mucosa, below my mylohyoid and medially. Genioglossus muscle

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11
Q

What happens to the sublingual ducts

A

Vary
Anterior part drains via single duct that joins submand duct
Posterior part drains via several small ducts that end on sublingual folds

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12
Q

What. The stroma

A

Covered with tough ct capsule what septa

Subdivided into lobules

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13
Q

What is the parenchyma

A

Clumping tubuloacin glands
Sec elements consist of serous acini, mucous acini and mixed acini although the type present does on gland
Sec prod by merocrine sec

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14
Q

What is merocrine sec

A

Occurs by exocytosis

Mem surrounding sec vesicles fuses with cell mem and discharge contents to extracellular space

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15
Q

What is serous secretion

A

Watery thin
Contains proteins, amylase and ions
Via active sec

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16
Q

What is mucus secretion

A

Mucin which consists of protein core that is highly deco with sugar residues and results in viscous sticky sec

17
Q

What are the cells of serous acini

A

Wedge shaped in basal part of cell
Extensii RER
Granular appearance

18
Q

What are mucous acini like

A

Tubular
Tubuloacinar glandular structure
Sec granules in cyto
When tissue processing

19
Q

What is serous demilune

A

Mixed acini
Submand gland
Crescent shaped collection of sec cells

20
Q

What are myoepthelial cells

A

Specialised cells for contraction

Help contract and sec from sec cells

21
Q

What does an acinus empty into

A

Intercalated duct consisting of cuboidal cells

22
Q

What does the intercalated duct empty into

A

Striated duct which the cells are columnar

23
Q

What happens in the duct which modifies the saliva

A

Cells pump sodium ions out saliva and pottasium and bicarbonate into saliva

24
Q

What does the striated duct empty into

A

Excretory duct aka collecting ducts

Whic are lined with pseudo stratified columnar epi

25
Q

What are some minor salivary glands

A 
Lingual 
Minor sublingual 
Labial 
Palatine 
Buccal.
26
Q

What are von ebner gland

A

One group of minor salivary glands
Serous
Associated with vallate papillae flush out cleft

27
Q

What innervation is though to increase saliva prod

A

Parasymp increase

Symp decreases

28
Q

What are taste buds

A

Chemo receptive units span epi
Molecules enter pore and interact with receptors on micorvilli
Read neurotransmitter to afferent nerve fibres

29
Q

What are some basic functions of the saliva

A 
Protection mouth drying out and flushing bacteria 
Buffering 
Tooth integrity 
Anti microbial activity 
Digestion
Taste

Histology (17 decks)

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