PHYSIOLOGY
CENTRAL NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Most neurons have a cell body, an axon, and dendrites. The cell body contains the nucleus and cytoplasm. The axon extends from the cell body and often gives rise to many smaller branches before ending at nerve terminals.
Detailed explanation-2: -An adult brain contains about 100 billion nerve cells. Branches connect the nerve cells at more than 100 trillion points. Scientists call this dense, branching network a “neuron forest.” Signals traveling through the neuron forest form the basis of memories, thoughts, and feelings.
Detailed explanation-3: -The nervous system subdivides into the central nervous system and the peripheral nervous system. The central nervous system is the brain and spinal cord, while the peripheral nervous system consists of everything else.