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प्रश्न
Explain the structure of neuron with the help of a labelled diagram.
उत्तर
Structure of neuron:
A neuron is the building material of the nervous tissue. Neurons are involved in conducting impulses to different parts of the body on receiving an external or internal stimuli. It consists of the following three parts:
(i) Cyton:
It refers to the cell body of neuron and is composed of nucleus and cytoplasm. Clumps of ribosomes called Nissl's granules are distributed in its cytoplasm.
(ii) Dendron:
They are short processes that arise from the cell body. They get further branched into dendrites.
(iii) Axon (nerve fibre):
It is the long and cylindrical part of the cell that forms fine branches terminally. Each branch of axon is swollen at an end, forming a synaptic knob (bouton) that contains acetylcholine (neurotransmitter) filled vesicles.
APPEARS IN
संबंधित प्रश्न
Name the tissue present in the brain.
Put a tick (✓) against the most appropriate alternative in the following statement.
The fine branches given out from the cell body of a nerve cell are __________.
A tissue is formed of only one type of cells.
Fill in the blank
The .................. or nerve fibers constitute the nerves.
Write a short answer
What is a neuron?
List one function of the following : 4.neuron
Name the kind of cells found in the following place:
Brain
Study the diagram given below and then answer the question that follows:
Name the parts labelled 1, 2, 3, 4, 5 and 6.
Give structure, types and functions in brief of the following:
Nervous tissue
The ______ is a single, long fiber-like process that develops from the cyton.
