EMBRYOLOGY
NERVOUS SYSTEM
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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neurons
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protons
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marrow
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None of the above
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Detailed explanation-1: -The actual nerve cell is the neuron. It is the “conducting” cell that transmits impulses and the structural unit of the nervous system. The other type of cell is neuroglia, or glial, cell. The word “neuroglia” means “nerve glue.” These cells are nonconductive and provide a support system for the neurons.
Detailed explanation-2: -The basic unit of the nervous system is a nerve cell, or neuron. The human brain contains about 100 billion neurons.
Detailed explanation-3: -Cells of the nervous system, called nerve cells or neurons, are specialized to carry “messages” through an electrochemical process. The human brain has approximately 86 billion neurons. To learn how neurons carry messages, read about the action potential. Neurons come in many different shapes and sizes.
Detailed explanation-4: -At the axon ending, another set of synaptic contacts is made on yet other cells. The target cells of neurons include other nerve cells in the brain, spinal cord, and autonomic ganglia, and the cells of muscles and glands throughout the body.