Sample Questions 3

Question 1

Types of hormones:

SAP

Answer 1

• steroid
• amine
  
  • catacholamine
  • thyroid hormone, both are derived from tyrosine
• peptide

Question 2

Steroid hormones have several sources:

SAT

Answer 2

• adrenal cortex
• testes/ovaries
• skin

Question 3

HCO3 ions secreted by the pancreas:

Answer 3

• neutralize hydrochloric acid coming from the stomach
• reduce secretin secretion from S cells
• allow micelle formation to occur

Question 4

The pancreas secretes enzymes that hydrolyze ribonucleic acids. True or false.

Answer 4

true

Question 5

Ingestion of which solution would induce the smalloest secretion of pancreatic juice?

Answer 5

alkaline solution containing no fat or protein

Question 6

Conjugation of glycine with cholic acid in the liver hepatocyte yields

Answer 6

• glycocholic acid
• a product which is more water soluble than cholesterol
• a product which is more amphipathic than cholesterol

Question 7

A stable emulsion of fat is required for optimal luminal fat digestion. True or false.

Answer 7

true

Question 8

bile salts stabilize emulsified fat by providing a coating over the surface of the emulsion particle. True or false

Answer 8

true

Question 9

As micelles break down, the end products of fat digestion are released into the aqueous fluid and absorbed across the brush border membrane. True or false?

Answer 9

True

Question 10

Triglycerides formed in the endoplasmic reticulum coalesce to form lipid droplets. True or false

Answer 10

true

Question 11

Elevated fat in stools may be due to

Answer 11

• failure of the pancreas to secrete NaHCO3
• failure of the pancreas to secrete lipase
• failure of bealipoprotein synthesis by enterocytes