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प्रश्न
Distinguish between the following pair of words:
Motor and sensory nerve
उत्तर
| Motor nerve | sensory nerve |
| A motor nerve contains motor fibres which bring impulses from the brain or spinal cord to the effector ornans. | A sensory nerve contains sensory fibres which bring impulses from the sense organs to the brain or spinal cord. |
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संबंधित प्रश्न
Describe T.S. of the spinal cord.
Differentiate between following pair with reference to the aspect in bracket.
cerebrum and spinal cord (arrangement of cytons and exons of neurons).
Where is this located?
Ganglia
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.
(ii) Using the letters of the alphabet shown in the figure indicate the direction in which an impulse enters and leaves the spinal cord.
(iii) What is the term given to the point of contact between two nerve cells?
(iv) What is meant by ‘simple reflex’ ? Give two examples of simple reflexes and name the stimuli too.
(v) How does the arrangement of nerve cells in the spinal cord differ from that in the brain?
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?
Which neuron conducts impulse from the spinal cord to the effector organ?
Which statement is correct regarding spinal nerves in man?
Sensory nerve fibres forming ascending tracts in white matter of spinal cord are located in ____________.
Explain the formation of a typical spinal nerve with the help of a neat labelled diagram.
In humans, the number of spinal nerves are ______.
