Respiratory CO2 Excretion, Renal H+ Excretion

Question 1

What does the respiratory centre in the brainstem help regulate?

Answer 1

H+ ion concentration by controlling the rate and depth of breathing

Question 2

What happens to respiratory excretion of c02 during exercise?

Answer 2

the carbon dioxide level in the blood increases

Question 3

What does co2 combine with

Answer 3

water

Question 4

What happens when co2 combines with h20?

Answer 4

H2CO3 then dissociates into H+ and HC03-

Question 5

What happens When the concentration of H+ ions increases,

Answer 5

this lowers pH

Question 6

what does the respiratory centre do in response to exercise

Answer 6

increases the rate and depth of breathing, so the lungs excrete more carbon dioxide

Question 7

What happens after more c02 is excreted

Answer 7

pH returns to normal, as the reaction functions in reverse, and the CO2 is exhaled from the lungs:

Question 8

What do nephrons do in the renal excretion of H+ ions?

Answer 8

Nephrons regulate concentration of H+ ions, by secreting excess into the urine

Question 9

What is the process of renal excretion of H+ ions

Answer 9

tubular secretion