Question

Hemorrhage triggers all of these responses EXCEPT __________.

A) an increase in heart rate
B) an increase in urine production
C) release of the venous reserve
D) an increase in erythropoiesis

Answer 1

In response to a hemorrhage, the body does not increase urine production but rather induces compensatory mechanisms like increasing heart rate, releasing the venous reserve, and enhancing erythropoiesis to maintain blood pressure and volume.

Step-by-step explanation:

The response to a hemorrhage does not include an increase in urine production. In fact, it triggers a range of compensatory responses to maintain blood pressure and volume. These responses include:

• An increase in heart rate to restore cardiac output to normal levels.
• Release of the venous reserve to increase venous return and blood pressure.
• An increase in erythropoiesis, which is stimulated by the hormone erythropoietin to produce more red blood cells.

During a hemorrhage, decreased blood pressure prompts the release of renin from the kidneys (not liver), which leads to aldosterone release. Aldosterone then prompts the kidneys to reabsorb sodium, which helps to retain water and, therefore, increases blood volume. These mechanisms lead to a decrease in urine output, not an increase.