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प्रश्न
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?
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उत्तर
(i)
- White matter
- Gray matter
- Dorsal root
- Ventral root
- Dorsal ganglion
- Sensory neuron
- Spinal nerve
- Synapse
(ii) The arrows indicate the arrangement of white and gray matter is reversed from that in the brain. The patl4way indicated is termed as a nerve pathway in a simple spinal reflex.
(iii) Sensory or Afferent nerve.
संबंधित प्रश्न
Describe T.S. of the spinal cord.
Distinguish between the following pair of words:
Motor and sensory nerve
Give one point of difference between the following on the basis of what is indicated:
Cerebrum and spinal cord. (Arrangement of neurons)
There are ______ pairs of cranial nerves and ______ pairs of spinal nerves.
Which neuron conducts impulse from the spinal cord to the effector organ?
Which statement is correct regarding spinal nerves in man?
______ connects the brain to a different part of the body through nerves.
How are cytons and axons arranged in the spinal cord?
Spinal nerves are usually ______
Explain the formation of a typical spinal nerve with the help of a neat labelled diagram.
