Compared with other sensory neurons, such as those that serve mechanoreceptors, Ia sensory fibers are
A) far less commonly found in the human nervous system.
B) less likely to be myelinated in the human nervous system.
C) very large and very fast.
D) very small and slow.

Question

Quizplus · Accepted Answer

Ia sensory fibers are very large in diameter and myelinated, which allows them to conduct nerve impulses very quickly. They are responsible for conveying information about changes in muscle length and are important for maintaining posture and controlling movement. Compared to other sensory neurons, Ia fibers are some of the fastest conducting nerves in the body.

Compared with Other Sensory Neurons, Such as Those That Serve