Question

exam lesson name: the human body
exam number: 700946rr
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question 20 of 20 :
select the best answer for the question.

1. which of the following accurately describes the function of motor neurons?

○ a. carry nerve impulses to the brain from skin and other sensory organs
○ b. carry nerve impulses from the brain to skin, glands, and muscles
○ c. carry automatic nerve signals to organs like the heart
○ d. conduct information between nervous systems in the brain

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Explanation:

To solve this, we analyze each option:

• Option A: Sensory neurons carry impulses from sensory organs to the brain, not motor neurons. Eliminate A.
• Option B: Motor neurons transmit nerve impulses from the central nervous system (brain/spinal cord) to effectors like skin, glands, and muscles to initiate responses. This matches the function of motor neurons.
• Option C: Autonomic neurons (part of the peripheral nervous system, like those controlling the heart) are not the same as motor neurons (somatic motor neurons control voluntary movements, while autonomic has its own categories). Eliminate C.
• Option D: Interneurons conduct information between nervous systems in the brain, not motor neurons. Eliminate D.

Answer:

B. Carry nerve impulses from the brain to skin, glands, and muscles