Question

which of the following organ systems is responsible for detecting stimuli in the environment and responding to those stimuli?
a.) respiratory system
b.) muscular system
c.) cardiovascular system
d.) nervous system

Explanation:

The nervous system is responsible for detecting stimuli (through sensory neurons) and responding to them (via motor neurons and coordinated neural pathways). The respiratory system deals with gas exchange, the muscular system with movement, and the cardiovascular system with blood circulation.

Answer:

d. Nervous system