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प्रश्न
How are cytons and axons arranged in the spinal cord?
How are the Cytons and Axons of neurons arranged in the following?
Spinal Cord
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उत्तर
Cytons (gray matter) → inner region (butterfly-shaped core)
Axons (white matter) → outer region
संबंधित प्रश्न
Distinguish between the following pair of words:
Cranial nerve and spinal nerve
Where is this located?
Meninges
Give Technical Term:
The fluid which fills the central canal of the spinal cord.
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?
Mention, if the following statement is True or False
Spinal nerves are twelve pair
Identify the odd item from the following series of words.
Sketch and label T. S. of Spinal cord.
There are ______ pairs of cranial nerves and ______ pairs of spinal nerves.
In humans, the number of spinal nerves are ______.
