Hormones Flashcards by Chaz James | Brainscape

Q

Where is gastrin secreted from?

A

G cells, antrum

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Q

What is gastrin secreted in response to?

A

nerve (GRP)

- dietary secretagogues

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Q

What action does gastrin have?

A

increase acid
secretion
increase gastric motility
pepsin secretion

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Q

What is CCK short for?

A

Cholecystokinin

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Q

Where is CCK produced?

A

I cells, duodenum

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Q

What is CCK released in response to?

A

fatty acids

peptides

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Q

What action does CCK have?

A

pancreatic enzyme secretion
gallbladder contraction
decreased gastric secretion
decreased gastric motility

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Q

Where is secretin released from?

A

S cells, duodenum

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Q

What is secretin released in response to?

A

H+

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Q

What action does secretin have?

A

pancreatic HCO3- secretion
biliary HCO3- secretion
decreased gastric secretion

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Q

What is GIP short for?

A

Gastric Inhibitory Peptide

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Q

Where is GIP produced?

A

K cells, duodenum

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Q

what is GIP released in response to?

A

fatty acids

- glucose

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Q

what action does GIP have?

A

decreased gastric secretion

- increased insulin secretion

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Q

where is motilin released?

A

small intestine

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Q

What is motilin released in response to?

A

lack of nutrients

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Q

What does motilin do?

A

increases GI motility; migrating motor complex (interdigestive motility)

Q

Which nervous system uses ACh?

A

PNS and ENS

Q

when is ACh released?

A

when there’s food

Q

What does ACh do?

A

increase secretion

- increase motility

Q

Where is somatostatin released from?

A

D-cells, stomach

Q

what is somatostatin released in response to?

A

acid

Q

what does somatostatin do?

A

decrease secretion of gastrin

Q

What does VIP stand for

A

vasoactive intestinal peptide

Q

what is VIP released in response to ?

A

ENS nerve stimulation

Q

what does VIP do?

A

relaxation of sphincters
increased intestinal secretion
vasodilation of arterioles

Q

where is histamine released from?

A

ECL cells, stomach

Q

what is histamine released in response to?

A

ACh

gastrin

Q

what does histamine do?

A

increase acid secretion

Q

what is 5-HT?

A

seretonin

Q

where is 5-HT released from

A

enterochromaffin cells, intestine

Q

what is 5-HT released in response to?

A

mechanoreceptor/chemoreceptor stimulation

Q

what does seretonin do?

A

stimulate nerves of the ENS

Q

what is NO released in response to?

A

ENS nerve stimulation

Q

what does NO do?

A

relaxation of sphincters

- vasodilation of arterioles

Q

what is GRP short for?

A

gastrin releasing peptide

Q

what is GRP released in response to?

A

ENS nerves

Q

what does GRP do

A

increase secretion of gastrin

Q

what does noradrenaline do?

A

general inhibition of digestion

Q

what does aldosterone do?

A

stimulates active sodium reabsorption (and water as a result) – collecting duct

Q

what does ADH do?

A

stimulates passive water reabsorption – collecting duct