Reflex arcs
A)require the actions of the brain.
B)do not utilize somatic motor nerves.
C)generally rely on the actions of the hypothalamus.
D)may have a single synapse.

Question

Quizplus · Accepted Answer

Reflex arcs involve a quick and automatic response to a stimulus, typically without involving the brain in the processing of the information. They can be completed by a single synapse between the sensory neuron and motor neuron, allowing for a swift response to a stimulus. Therefore, option D is correct. Option A is incorrect because reflex arcs do not require the actions of the brain. Option B is incorrect because reflex arcs do use somatic motor nerves. Option C is incorrect because the hypothalamus is not specifically involved in reflex arcs.

Reflex Arcs