Which of the following terms describes glycogen catabolism?

a. Releasing stored bicarbonate: This function helps regulate acid-base balance but is not related to red blood cell production.

b. Producing and secreting erythropoietin: The kidneys produce and release erythropoietin, a hormone that stimulates red blood cell production in the bone marrow.

c. Stimulating conversion of angiotensinogen: This is part of the renin-angiotensin system, which regulates blood pressure and fluid balance, not red blood cell production.

d. Activating vitamin D: This function helps in calcium and phosphate metabolism but is not directly involved in red blood cell production.

a: Basal ganglia - The basal ganglia are involved in motor control and coordination but not in respiratory regulation.

b: Parietal lobe - The parietal lobe is involved in sensory processing and spatial awareness but not in respiratory regulation.

c. Medulla: The medulla oblongata, specifically the respiratory center within it, is responsible for the involuntary control of respiration, including setting the basic rhythm of breathing and responding to changes in blood pH and oxygen levels.

d: Hypothalamus - The hypothalamus regulates various physiological processes, including temperature regulation and hormone secretion, but not respiration.