In the context of AP Psychology, which of the following best describes the primary function of sensory neurons in the nervous system?

• A. They produce myelin to insulate axons and speed up neural transmission.
• B. They connect neurons within the brain and spinal cord to facilitate communication.
• C. They carry signals from the central nervous system to muscles and glands.
• D. They transmit information from sensory receptors to the central nervous system.

Answer: (D)

Verified step by step guidance

1. Step 1: Understand the role of different types of neurons in the nervous system. There are three main types: sensory neurons, motor neurons, and interneurons.
2. Step 2: Identify the function of sensory neurons. Sensory neurons are responsible for carrying information from sensory receptors (like those in the skin, eyes, ears) toward the central nervous system (CNS).
3. Step 3: Differentiate sensory neurons from motor neurons, which carry signals away from the CNS to muscles and glands, and from interneurons, which connect neurons within the CNS.
4. Step 4: Recognize that myelin production is a function of glial cells, not neurons themselves, so sensory neurons do not produce myelin.
5. Step 5: Conclude that the primary function of sensory neurons is to transmit sensory information from the body to the brain and spinal cord, enabling perception and response to stimuli.