IAS (Admin.) Mains Zoology Physiology-Neuron, Nerve Impulse and Synaptic Transmission Study Material (Page 1 of 6)

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Neuron, Nerve Impulse and Synaptic Transmission

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Neuron

  • Neurons are also known as nerve cells and they are the functional unit of nervous system. These have a special structure but vary greatly in size and shape. Nerve cells do not divide and present from birth, new ones do not develop. It is the longest cell of the body. Each neuron is divided into three parts-
    • Cell body
    • Axon
    • Dendrites
Nerve Cells

Cell Body (Cyton)

  • The cell body of the neuron is also known as cyton, Perikaryon or Soma. it varies considerably in size and form. It may be up to 13.5 micrometer in diameter and may be rounded, oval, pyramidal or star like…

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Gross Neuroanatomy of the Brain and Spinal Cord: Human Brain

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Gross Neuroanatomy of the Brain and Spinal Cord

The central nervous system consists of both brain and spinal cord. The human brain or encephalon is located at the cranial cavity of the skull and having an oval shape and yellowish in color. The weight of human brain is 1200 - 1400 gm. The infant stage itself it՚s develop around 75 …

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