## **Core Concept**
The submandibular gland is located in the neck and is surrounded by several important cranial nerves. During surgical removal of the submandibular gland, it is crucial to identify and protect these nerves to prevent damage. The nerves at risk are primarily those that innervate the face and control various functions such as facial expression, sensation, and glandular secretion.

## **Why the Correct Answer is Right**
The correct answer involves the identification of the marginal mandibular branch of the facial nerve (cranial nerve VII), the lingual nerve, and the hypoglossal nerve (cranial nerve XII).
- The **marginal mandibular branch of the facial nerve** controls muscles of facial expression in the lower lip and chin area.
- The **lingual nerve** provides sensory innervation to the anterior two-thirds of the tongue.
- The **hypoglossal nerve** is responsible for motor innervation to the tongue.
These nerves are in close proximity to the submandibular gland and are at risk during its surgical removal.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because it does not accurately list the nerves at risk during submandibular gland removal.
- **Option B:** This option is incorrect as it likely includes nerves not specifically at risk during this surgery or misses key nerves.
- **Option C:** This option is incorrect because, similar to options A and B, it does not correctly identify the nerves at risk.

## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that the **marginal mandibular branch of the facial nerve** is particularly at risk because it runs close to the inferior border of the mandible and can be easily damaged during surgical procedures in this area. Surgeons often take precautions such as making a step incision or using nerve stimulation to identify and protect this nerve.

## **Correct Answer:** . VII, IX, XII