Question

What is the nerve supply of the marked structure “A”?

• A. Nerve to mylohyoid and facial nerve
• B. Facial nerve and mandibular nerve
• C. Mandibular nerve and spinal accessory nerve
• D. Facial nerve and spinal accessory nerve

Hint:

When a head and neck structure has mixed embryological origin, it may show dual nerve supply.

Answer 1

The Correct Option is B

Concept: The marked structure is supplied by two nerves: facial nerve and mandibular nerve. This is commonly tested in structures related to facial expression and mandibular arch muscle contribution.

Step 1: Identify the supplied structure.
The structure marked in the image has dual nerve supply.

Step 2: Recall the nerve supply.
The two nerves involved are: \[ \text{Facial nerve} + \text{Mandibular nerve} \]

Step 3: Choose the correct option.
Therefore, the correct nerve supply is: \[ \text{Facial nerve and mandibular nerve} \]