Upper GI Tract Flashcards

0
Q

Functions of saliva.

A
Amylase, digestion.
Mucous, facilitates swallowing.
Lysosomes, protective. 
Solvent to stimulate taste.
Moisturiser to aid speech
Promotes oral hygiene
Bicarbonate neutralises acid
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1
Q

Name the salivary glands and their secretions.

A

Parotid, serous.
Submandibular, serous.
Sublingual, mucous.
Simple, mucous.

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2
Q

Functions of duct cells of salivary glands.

A

Reabsorb sodium and chloride
Secrete potassium and bicarbonate
Impermeable to water

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3
Q

Outcomes of parasympathetic and sympathetic stimulation of salivary glands.

A

Parasympathetic, serous, rich in enzymes

Sympathetic, mucous

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4
Q

Stimulation of saliva production

A

Simple reflex
Taste, smell, chewing-> pressure receptors-> salivary centre medulla-> autonomic nerves-> salivary glands
Other inputs-> conditioned reflex

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