Atrial natriuretic peptide (ANP) is a hormone that is made in the atria of the heart. The influence of this hormone is to ________
A) prevent pH changes caused by organic acids
B) reduce blood pressure and blood volume by inhibiting sodium and water retention
C) enhance atrial contractions
D) activate the renin-angiotensin mechanism
B
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Cardiac muscle is only found in the heart
Indicate whether the statement is true or false.
Carboxypeptidase is an enzyme that helps digest
A. amino acids within the stomach. B. complex carbohydrates within the small intestine. C. peptides within the small intestine. D. disaccharides within the duodenum. E. starch within the stomach.
Cytokines function by __________.
A) digesting invading cells. B) poisoning and killing invading cells. C) acting as messengers for growth and activity of other cells and poisoning and killing invading cells. D) acting as messengers for growth and activity of other cells, poisoning and killing invading cells, and digesting invading cells. E) acting as messengers for growth and activity of other cells.
________ is the innermost membrane of the meninges.
A. White matter B. Pia mater C. Dura mater D. Aarachnoid mater