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प्रश्न
Give the functions of the spinal cord?
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उत्तर
(i) It controls all the reflex actions occurring below the neck.
(ii) It conducts sensory impulses from the skin to the brain and motor impulses from the brain to the muscles of trunk and limbs.
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संबंधित प्रश्न
Distinguish between the following pair of words:
Motor and sensory nerve
Where is this located?
Ganglia
The diagram given below represents the spinal cord of a mammal, seen in a transverse section together with the nerves. Study the diagram and then answer the questions given below:
(i) Label the parts 1—8 indicated by guidelines.
(ii) What do the arrows indicate? What is the pathway indicated termed?
(iii) What type of nerve is shown in the diagram?
Complete the following sentence with appropriate word :
The part of the central nervous system which responds to the reflex action is ________.
There are ______ pairs of cranial nerves and ______ pairs of spinal nerves.
Which neuron conducts impulse from the spinal cord to the effector organ?
Sensory nerve fibres forming ascending tracts in white matter of spinal cord are located in ____________.
How are cytons and axons arranged in the spinal cord?
Explain the formation of a typical spinal nerve with the help of a neat labelled diagram.
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.
