NEET PG DENTAL EXAM

EMBRYOLOGY

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Neurons that conduct nerve impulses from the receptors to the central nervous system are
A
Motor neurones
B
Efferent neurons
C
Relay neurons
D
Sensory neurons
Explanation: 

Detailed explanation-1: -Afferent, or sensory, neurons carry impulses from peripheral sense receptors to the CNS. They usually have long dendrites and relatively short axons. Efferent, or motor, neurons transmit impulses from the CNS to effector organs such as muscles and glands.

Detailed explanation-2: -Relay neurons are found between sensory input and motor output/response. Relay neurons are found in the brain and spinal cord and allow sensory and motor neurons to communicate.

Detailed explanation-3: -Sensory neurons are the afferent limb of somatosensory neural pathways. The neuron consists of a cell body, axon, and dendrites. Dendrites are finger-like projections that receive sensory input and transmit the signal through the axon to the cell body.

Detailed explanation-4: -Sensory neurons carry nerve impulses from sense organs and internal organs to the central nervous system. Motor neurons carry nerve impulses from the central nervous system to organs, glands, and muscles-the opposite direction.

There is 1 question to complete.