Question

(a) Draw the structure of a neuron and label the following on it
Nucleus, Dendrite, Cell body and Axon
(b) Name the part of neuron
(i) where information is acquired.
​(ii) through which information travels as an electrical impulse.

Answer 1

Answer:

b) There are three parts of neuron

1. Cell body
2. Axon
3. Dendrites

i) Dendrites is the part of neuron , where information is acquired.

ii) Information travels as an electrical impulse through axon.

Explanation:

NEURON

• It is the structural and functional unit of nervous system.
• It can detect, receive, and transmits the different kind of stimulus.
• It is the longest cell of the cell due to lack of centriole . There is no power of division but during embryonic stage centriole is present.
• Repairing and regeneration is possible due to the presence of Nissl's granules.
• At the place where mylein sheath is absent is known as Nodes of Ranvier.
• Phospholipid layer provides insulation which prevents the leakage of ions.
• Mylein sheath is made up of phospholipid .
• Mylein sheath deposition is discontinuous.