Question

Following a road traffic accident, a patient suffered trauma from a dashboard impactClinical and radiographic investigations revealed damage to the inferior alveolar nerve at its originWhich of the following muscles is most likely to be paralyzed?

• A. Geniohyoid
• B. Mylohyoid
• C. Stylohyoid
• D. Hyoglossus

Hint:

Inferior alveolar nerve → gives nerve to mylohyoid before entering mandibular foramen.

Answer 1

The Correct Option is B

Step 1: Understanding the Inferior Alveolar Nerve.
The inferior alveolar nerve is a branch of the mandibular division (V3) of the trigeminal nerveBefore entering the mandibular foramen, it gives off the nerve to mylohyoid
Step 2: Branch at the Origin.
The nerve to mylohyoid arises from the inferior alveolar nerve near its originThis nerve supplies the mylohyoid muscle and the anterior belly of digastric
Step 3: Analysis of Options.
(A) Geniohyoid — Supplied by C1 fibers via hypoglossal nerve
(B) Mylohyoid — Supplied by nerve to mylohyoid (branch of inferior alveolar nerve)
(C) Stylohyoid — Supplied by facial nerve (VII)
(D) Hyoglossus — Supplied by hypoglossal nerve (XII)
Step 4: Conclusion.
Damage to the inferior alveolar nerve at its origin will paralyze the mylohyoid muscle