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प्रश्न
Explain the following term :
Gray matter
उत्तर
The cerebral cortex contains cell bodies of the neuron and is greyish in colour. It is called gray matter. The grey matter has many folds (i.e. gyri) and grooves (i.e. sulci). They increase the surface area to accommodate more nerve cells. A higher number of convolutions leads to greater intelligence.
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संबंधित प्रश्न
State whether the following statement is true (T) or false (F):
Retina is present on the outer surface of the eye.
Draw a labelled diagram of eye.
Give the functions of retina, pupil, and optic nerve.
Given here is the diagram of a neuron. Name the parts numbered 1-6
Name the following:
Study of structure and functions of nervous system.
Match the terms of column I with those of column ll
| Column l | Column ll |
| (i) Lens | (a) Adjustment of light rays |
| (ii) Lachrymal gland | (b) Vision |
| (iii) Olfactory epithelium | (c) Secretion of tear |
| (iv) Cochlea | (d) Balance of the body |
| (v) Semicircular canal | (e) Hearing |
| (vi) Eyes | (f) Smell |
Explain the Term: Synapse
Give Technical Term:
Nerve that transfers impulses from ear to brain.
What are masses of grey matter located in white matter in the cerebral hemisphere?
______ is also known as duct of Sylvius.
