Homeostasis Review Questions
1. Which of the following best illustrates positive feedback?
a) Secretion of acid by cells in the stomach lining is suppressed when the acidity of the
stomach contents increases.
b) A rise in blood pressure stimulates the elimination of water in the urine, which reduces
c) An increase in the concentration of H+ in blood causes an increase in H+ excretion in
d) An increase in the carbon dioxide concentration of the blood stimulates breathing
frequency, which increases the rate of carbon dioxide elimination from the body.
e) Estrogens stimulate pituitary release of Luteinizing Ho