Question

The bundle of nerve fibres is covered by ___________ and several bundles are covered by ___________} to form the nerve.

• A. A – Endoneurium,\; B – Perineurium
• B. A – Perineurium,\; B – Epineurium
• C. A – Endoneurium,\; B – Epineurium
• D. A – Epineurium,\; B – Perineurium

Hint:

Endoneurium → single fibre,\; Perineurium → bundle,\; Epineurium → whole nerve.

Answer 1

The Correct Option is B

Step 1: Structure of a nerve.
A nerve is composed of many nerve fibres grouped together into bundles, and each structural level is protected by a connective tissue sheath.
Step 2: Coverings of nerve fibres.
A bundle of nerve fibres (fascicle) is covered by the perineurium. Several such bundles together are enclosed by the epineurium to form a nerve.
Step 3: Analysis of options.
(A) Incorrect — endoneurium surrounds individual nerve fibres.
(B) Correct — perineurium covers bundles and epineurium covers the entire nerve.
(C) Incorrect — endoneurium does not cover bundles.
(D) Incorrect — epineurium is the outermost covering.
Step 4: Conclusion.
The correct sequence is A – Perineurium and B – Epineurium.