Author Question: Which organ system actually excretes H+ from the body? a. Kidneys b. Liver c. Lungs d. ... (Read 47 times)

leilurhhh · **on:** Jul 16, 2018

Which organ system actually excretes H+ from the body?

a. Kidneys
b. Liver
c. Lungs
d. Spleen

Question 2

The majority of the acid the body produces in a day is excreted through the lungs as CO2. What happens to the H+ ions?

a. They are bound to Hb.
b. They bind to phosphate.
c. They form carbamino compounds.
d. They bind to an OH-forming H2O.

maya.nigrin17@yahoo.com · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: A
The kidneys physically remove H+ from the body.

Answer to Question 2

ANS: D
The CO2 excretion of the lungs does not actually remove H+ ions from the body. Instead, the chemical reaction that breaks down H2CO3 to form CO2 binds H+ ions in the harmless water molecule:
H+ + HCO3 H2CO3 H2O + CO2