Question

exam lesson name: introduction to human anatomy and physiology
exam number: 700794rr
exam guidelines
exam instructions
question 14 of 20 :
select the best answer for the question.

1. which of the following is the organ system that allows people to think, sense the environment, and respond to stimuli?

a. the endocrine system
b. the nervous system
c. the integumentary system
d. the digestive system
mark for review (will be highlighted on the review page)
<< previous question next question >>

Explanation:

To solve this, we analyze each option:

• Option A: The endocrine system regulates the body through hormones, not primarily for thinking/sensing/responding to stimuli.
• Option B: The nervous system consists of the brain, spinal cord, and nerves. It enables thinking, sensing the environment (via sensory neurons), and responding to stimuli (via motor neurons).
• Option C: The integumentary system (skin, hair, nails) protects the body, not for thinking or responding to stimuli in the way described.
• Option D: The digestive system is for breaking down food, not related to thinking or sensing stimuli.

Answer:

B. The nervous system