10.7 The GI Accessory Organs Part 2

Question 1

What two places can bile go?

Answer 1

directly to the duodenum
stored in the gallbladder

Question 2

What is the function of the gallbladder?

Answer 2

store bile

Question 3

What are gallstones?

Answer 3

large crystals formed from bile made with ingredients in incorrect proportions

Question 4

What dictates bile release from the gallbladder?

Answer 4

endocrine = CCK
nervous system = parasympathetic

Question 5

Besides secreting bile, what are the six major roles of the liver?

Answer 5

1. processing absorbed nutrients
2. storing glycogen
3. regulates waste products from protein breakdown
4. aids in lipid metabolism
5. produces many important plasma proteins
6. major center for drug and toxin detox

Question 6

Where are the two locations that the liver receives blood from?

Answer 6

1. oxygenated blood from hepatic arteries
2. venous blood drained from stomach and intestines through hepatic portal vein

Question 7

What are the three hormones that control appetitie?

Answer 7

ghrelin
peptide YY
leptin

Question 8

What is the function of ghrelin? What secretes it and in response to what?

Answer 8

stimulate appetite; secreted by gastric cells; when stomach is empty

Question 9

What is the function of peptide YY? What secretes it and in response to what?

Answer 9

reduce appetite; jejunum; colon is full

Question 10

What is the function of leptin?

Answer 10

hormone produced by white adipocyte tissue that acts as an appetite suppressant to maintain stable lipid content in adipose tissue

Question 11

What are all three hormones that regulate appetite regulated by?

Answer 11

arcuate nucleus of the hypothalamus