describe the characteristics and functions of the nervous and muscle tissue

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Medical Sciences

describe the characteristics and functions of thenervous and muscle tissue

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Nervous tissue is the main tissue component of the nervous system They consist of two parts the central nervous system CNS and the peripheral nervous system PNS The CNS comprises the brain and the spinal cord and the PNS comprises the branching peripheral nerves which reach out to all the body parts The nervous tissue consists of two categories of cells neurons and neuroglia Neurons are long cells and are also called Nerve fibers Each neuron has two distinct parts a cell body called cyton and a long tail like cylindrical process with fine branches at the end called axon The cyton contain the cytoplasm nucleus and the other cell organelles It gives out short hair like extentions called dendrons The dendrons in turn branch into thin dendrites The axons may or may not be covered with a protein sheath made of myeline If the axons have the myeline sheath they are called myelinated nerve fibers and if See Answer

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