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Question
Given below is the transverse section of the spinal cord. Read the information below the diagram and fill in the blanks:
The spinal cord extends from the medulla oblongata of the brain and runs down through the whole length of the vertebral column. The spinal cord is covered by the meninges. It conducts impulses from the skin and muscles to the brain. It also conducts impulses from the brain to the muscles of the trunk and limbs.
The spinal cord is a part of the (a) ______ Nervous System. The grey matter in the picture given above consists of (b) ______ while the white matter consists of (c) ______. The spinal cord is concerned with the (d) ______ actions below the neck. (e) ______ is the bony structure that protects the spinal cord.
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Solution
The spinal cord is a part of the (a) Central Nervous System. The grey matter in the picture given above consists of (b) cytons/nerve cell bodies while the white matter consists of (c) axons/nerve cell fibres. The spinal cord is concerned with the (d) reflex actions below the neck. (e) Vertebral column is the bony structure that protects the spinal cord.
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RELATED QUESTIONS
Distinguish between the following pair of words:
Cranial nerve and spinal nerve
Fill in the blank with the function in the following:
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The diagram given below shows the internal structure of the spinal cord, depicting a simple reflex. Study the same and then answer the questions that follow:
(i) Name the parts numbered 1 to 5.
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______ connects the brain to a different part of the body through nerves.
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In humans, the number of spinal nerves are ______.
