Question

The gap between two neurons is called a

• A. dendrite
• B. synapse
• C. axon
• D. impulse

Answer 1

The correct option is B

synapse

The correct option is B

Explanation of the correct option:

1. In the nervous system, a synapse is a structure that permits a neuron (or nerve cell) to pass an electrical or chemical signal to another neuron or to the target effector cell.
2. The synapse contains a small gap separating neurons.
3. The synapse consists of a presynaptic ending that contains neurotransmitters, mitochondria and other cell organelles.

Explanation of the incorrect options:

Option A

1. Dendrites are the finger-like cells present on the end of a neuron.
2. They are short, branching fibres extending from the cell body of the nerve cell.
3. These fibres increase the surface area available for receiving incoming information.

Option C

Axon is a tube-like structure that carries electrical impulses from the cell body to the axon terminals that pass the impulse to another neuron.

Option D

A nerve impulse is an electric signal that passes along the dendrites to generate a nerve impulse or an action potential.

Final answer: The gap between two neurons is called a synapse.