EVERYDAY SCIENCE

SCIENCE

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
extensions of a neuron through which impulses are sent away from the cell body to other neurons, glands or muscles
A
nerve fibers
B
efferent nerves
C
axon, axon terminal
D
reflex
Explanation: 

Detailed explanation-1: -Axon. The axon is the elongated fiber that extends from the cell body to the terminal endings and transmits the neural signal. The larger the diameter of the axon, the faster it transmits information. Some axons are covered with a fatty substance called myelin that acts as an insulator.

Detailed explanation-2: -axon, also called nerve fibre, portion of a nerve cell (neuron) that carries nerve impulses away from the cell body. A neuron typically has one axon that connects it with other neurons or with muscle or gland cells. Some axons may be quite long, reaching, for example, from the spinal cord down to a toe.

Detailed explanation-3: -Thus in neurons, the part that carries nerve impulses away from the cell body and towards other cells is the dendrite.

Detailed explanation-4: -Neurons have a large number of extensions called dendrites. They often look likes branches or spikes extending out from the cell body.

Detailed explanation-5: -Typical neurons have several dendrites-branching processes that conduct impulses toward the cell body, and a single axon-a long straight process that conducts impulses away from the cell body. Axons are often referred to as nerve fibers.

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