Chapter 6: Problem 3

What is the difference between afferent and efferent neurons? What are interneurons?

Short Answer

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Afferent neurons carry sensory information from the body to the CNS, while efferent neurons transmit signals from the CNS to effector cells, orchestrating movement and glandular activity. Interneurons act as connectors within the CNS, enabling effective communication between different parts of the nervous system.

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Defining Afferent Neurons

Afferent neurons, also known as sensory neurons, are pathways that carry sensory information from the body to the central nervous system (CNS). They communicate information about the environment, such as temperature, light, sound, and other factors, and internal body conditions like blood pressure or physical wellbeing.

Defining Efferent Neurons

Efferent neurons, or motor neurons, transmit signals from the CNS to the effector cells. These neurons instruct muscles to contract or relax, thus enabling movement. They also control glands, influencing the production of substances such as hormones.

Defining Interneurons

Interneurons, also called relay neurons, act as the connectors between sensory and motor neurons within the CNS. They ensure that signals are appropriately relayed within the nervous system, allowing for effective communication between the different parts of the body.

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What is the difference between afferent and efferent neurons? What are interneurons?

Short Answer

Step by step solution

Defining Afferent Neurons

Defining Efferent Neurons

Defining Interneurons

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