Question

A thin delicate membrane surrounding the axon is ........

• A. Neurilemma
• B. Sarcolemma
• C. Chromonema
• D. Nucleollemma

Hint:

The neurilemma is essential for the regeneration of damaged nerve fibers, which is vital for the healing of nerve injuries.

Answer 1

The Correct Option is A

Step 1: Understanding the axon and its components.
The axon of a neuron is surrounded by a thin membrane known as the neurilemma. It is responsible for the regeneration of nerve fibers and helps in the conduction of nerve impulses. Step 2: Analyzing the options.
(A) Neurilemma: Correct. The neurilemma is the outermost layer surrounding the axon of a neuron.
(B) Sarcolemma: This is the membrane that surrounds muscle fibers, not axons.
(C) Chromonema: This is part of the chromosome, not related to axons.
(D) Nucleollemma: This is not a recognized term in biology. Step 3: Conclusion.
The correct answer is (A) Neurilemma.