SELECT * FROM question_mgmt as q WHERE id=3679 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=9 AND subId=16 AND chapterId=258 and ex_no='4' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 10th science Control and Coordination draw the structure of a neuron and explain its fun

Question:

Draw the structure of a neuron and explain its function.

Answer:

Nervous system controls and coordinates the activities, bevahiour of animals, also maintains the homeostasis (internal body temperature) & is composed of two principal cells:-

  • Neurons (nerve cells)

  • Neuroglia or glial cells                                                                                                                                                                                                                                          

  • Neurons:- These are the basic structural & functional unit of nervous system. They are specialized to respond to stimulus (any change in envirionment ,i.e, strong enough to initiate an nerve impulses) can be physical or chemical, conduct nerve impulses and release chemicals called neurotransmitters.

Nerve impulses travels at the speed ranges from 0.5 to 130 meters per second along plasma membrane of a neuron.

  • Neroglia cells or glial cells (glia-glue) :- These cells nourishes, protects and support the neurons.


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