Question

explain the nervous system

Answer 1

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here is your answer ⬇️

neurons are irritable i.e. respond to environmental stimuli by producing action potentials. neurons are ecrodermal.

==> components of nervous tissue: nerve tissue consists of two type of cells. nerve cells and supporting cells.

● NEURONS
neuron is the structural and functional unit of nervous tissue. it consists of a cell body and two types of cell process dentrites and axon.

● CELL BODY
the cell body is also known as perikaryon or soma or cyton. it consists the nucleus, with prominent nucleous. the cytoplasm contains nissil bodies.

● DENTRIES
these are usually short and they divide like the branch of a tree.

● AXON
the axon is a single long and cylindrical process that originates from short cone shaped region of perikaryon called the axon hillock. the palsma memebrane axon is axolemma, its cyroplasm is axoplasm.

●SYNAPSE
it is generally formed by an axon terminal.and thin intercellular space called the synaptic left. most synapses transmit information to next
neuron by releasing chemical neurotransmitters.

● GLIAL CELLS
nerve tissue has only a very small amount of extracellular matrix .

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