EVERYDAY SCIENCE

SCIENCE

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Fingerlike extensions that receive impulses
A
Cell Body
B
Synapse
C
Axon
D
Dendrites
Explanation: 

Detailed explanation-1: -Dendrites: Dendrites are short, finger-like projections present at the end of neurons.

Detailed explanation-2: -Dendrites are tapering extensions of the neuronal cell body that collectively provide a great increase in the surface area available for synaptic inputs; the total dendritic surface area of a typical spinal cord motor neuron, for example, may be 30 or more times that of the cell body.

Detailed explanation-3: -extensions called dendrites, and an axon. The dendrites carry impulses toward the cell body. The axon carries impulses away from the cell body. Axons and dendrites are sometimes called nerve fibers.

Detailed explanation-4: -At the end of the axon are several finger-like extensions where the electrical signal in the neuron becomes a chemical signal. These extensions, known as synapses, lead to nearby nerve cells. Dendrites: These are small branch-like extensions (their name comes from a Latin word that means “tree-like”) on the cell body.

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