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प्रश्न
Explain the structure of neuron with the help of a labelled diagram.
Explain the structure of a neuron. Draw and label the parts.
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उत्तर
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:
- 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.
- Dendron: They are short processes that arise from the cell body. They get further branched into dendrites.
- 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.
संबंधित प्रश्न
State whether the following statement is true or false.
A tissue is formed of only one type of cells.
Fill in the blank
The .................. or nerve fibers constitute the nerves.
Write true or false of the statement. Rewrite the false statement correctly.
Short thread-like branches arising from the surface of the cyton are called axons.
State two characteristics of nerve cells.
What is the difference between the nervous tissue and the nervous system?
Study the diagram given below and then answer the question that follows:
Identify the cell.
Study the diagram given below and then answer the question that follows:
Name the parts labelled 1, 2, 3, 4, 5 and 6.
Study the diagram given below and then answer the questions that follow:
Where is this cell likely to be found in the human body and what is its function?
Which of the following is not found in a neuron?
The ______ is a single, long fiber-like process that develops from the cyton.
