Question

Classify neurons based on its structure.

[Review question: Pg. No: 228]

Answer 1

Structurally the neurons may be of the following types:
(i) Unipolar neurons: Only one nerve process arises from the cyton which acts as both axon and dendron. Found in early embryos but not in adult.
(ii) Bipolar neurons: The cyton gives rise to two nerve processes of which one acts as an axon while another as a dendron. Found in retina of eye and olfactory epithelium of nasal chambers.
(iii) Multipolar neurons: The cyton gives rise to many dendrons and an axon. Found in cerebral cortex of brain.