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List two constituents of Central Nervous System (CNS). How are these components protected from injuries ?
Write two limitations of the use of electrical impulses.
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Which part of the brain is responsible for —
What are tropic movements ? Give an example of a plant hormone which
Write the main functions of the following:
Spinal cord is a cylindrical structure. It begins in continuation with the medulla oblongata of brain and extends downwards upto early part of lumbar region. Internally the spinal cord possesses a narrow fluid filled cavity called central canal. Spinal cord is enclosed in vertebral column or backbone which protects it.
