Epithelium transport/body fluids

Question 1

How does angiotensin II affect epithelial transport?

Answer 1

Activate the Na+/H+ antiport to increase Na+ absorption and H+ secretion

Question 2

T/F: Paracellular transport is an active process

Answer 2

False. Passive

Question 3

T/F: Water diffuses via aquaporins in all cells

Answer 3

False. Except in thick ascending limb

Question 4

, used to determine total body water
, used to determine ECF volume
_ used to determine plasma volume

Answer 4

• Deuterium oxide, tritium oxide
• Inulin, sucrose
• Evans blue

Question 5

T/F: Hyposmotic solutions are always hypotonic

Answer 5

True