EVERYDAY SCIENCE

SCIENCE

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which type of neuron is found exclusively in the central nervous system.
A
Sensory neurons
B
Interneurons
C
Motor neurons
D
None of the above
Explanation: 

Detailed explanation-1: -Interneurons (also known as association neurons) are neurons that are found exclusively in the central nervous system. ie Found in the brain and spinal cord and not in the peripheral segments of the nervous system.

Detailed explanation-2: -As the name suggests, interneurons are the ones in between-they connect spinal motor and sensory neurons. As well as transferring signals between sensory and motor neurons, interneurons can also communicate with each other, forming circuits of various complexity. They are multipolar, just like motor neurons.

Detailed explanation-3: -The central nervous system is made up of the brain and spinal cord: The brain controls how we think, learn, move, and feel. The spinal cord carries messages back and forth between the brain and the nerves that run throughout the body.

Detailed explanation-4: -Interneurons (also called internuncial neurons, relay neurons, association neurons, connector neurons, intermediate neurons or local circuit neurons) are neurons that connect to brain regions, i.e. not direct motor neurons or sensory neurons.

Detailed explanation-5: -The nerve cells of the central nervous system are all interneurons. In human brain, there are about 100 billion interneurons. Example is the Golgi cell found in the cerebellum. The interneurons receive impulses from the sensory neurons.

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