ATI LPN
Medical Surgical Endocrine Quiz Questions
Question 1 of 5
When an action potential reaches the axon terminal, what happens next?
Correct Answer: C
Rationale: AP triggers vesicle fusion, releasing ACh into cleft; then Na+ channels open, AChE acts later.
Question 2 of 5
Fluid is reabsorbed in which of the following vessels?
Correct Answer: D
Rationale: Capillaries reabsorb fluid via oncotic pressure at venous end.
Question 3 of 5
A class of immunoglobulins found concentrated in breast milk, and thus serve to passively and naturally enhance the specific immune system of a newborn is:
Correct Answer: A
Rationale: IgA in breast milk provides passive mucosal immunity to newborns.
Question 4 of 5
An increase in the level of carbon dioxide in the blood will result in a(n):
Correct Answer: B
Rationale: High CO2 (hypercapnia) stimulates chemoreceptors, increasing respiratory rate.
Question 5 of 5
The dartos muscle is responsible for:
Correct Answer: C
Rationale: Dartos muscle wrinkles scrotum, aiding temperature regulation indirectly.