PATHOLOGY

PATHOLOGY MCQ

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Neurons that travel toward the central nervous system are called
A
afferent neurons
B
efferent neurons
C
exit neurons
D
CNS neurons
Explanation: 

Detailed explanation-1: -Afferent neurons carry information from sensory receptors found all over the body towards the central nervous system, whereas efferent neurons carry motor information away from the central nervous system to the muscles and glands of the body in order to initiate an action.

Detailed explanation-2: -Afferent nerve fibers transmit information from the peripheral to the central nervous system. In the peripheral nervous system afferent nerve fibers are part of the sensory nervous system and arise from outside of the central nervous system.

Detailed explanation-3: -Efferent neurons have long axons and short dendrites. Afferent neurons originate from cell bodies outside the CNS. Conversely, efferent neurons cell bodies are within the CNS.

Detailed explanation-4: -The afferent nerves are the messenger neurons that bring the information from different parts of the body to the central nervous system (CNS). In biology, the afferent nerves are defined as the projections of axons that carry the stimulus from the peripheral organs to the central nervous system.

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