Question

Statements (A, B, C, D) in List I have to be matched with statements (p, q, r, s) in List II.

	List I		List II
A	Cyton	p	The body of the nerve cell that contains the organelles.
B	Dendrite	q	Receives the stimuli sent from another nerve or the outside environment.
C	Axon	r	A fatty substance that covers the axon of the nerve cell and speeds.
D	Myelin sheath	s	The long, thin section of the nerve cell where the impulse is transmitted across.

• A. A- p, B- q, C- s, D- r
• B. A- r, B- q, C- s, D- p
• C. A- r, B- s, C- q, D- p
• D. A- r, B- s, C- p, D- q

Answer 1

The correct option is A A- p, B- q, C- s, D- r

Cyton is the cell body of the neuron. It contains the nucleus.

Dendrites are the cellular extension from the cyton. They receive stimulus, which may be physical, chemical, mechanical or electrical, and passes it on to the cyton.

Axons are also known as nerve fibres which are a projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body.

Myelin sheath is also known as the medullary sheath. It is the envelope of myelin that surrounds the core of a nerve fiber or axon and that facilitates the transmission of nerve impulses, formed from the cell membrane of the Schwann cell in the peripheral nervous system and from oligodendroglia cells.

So, the correct answer is option C.