## **Core Concept**
The parotid gland receives its sensory supply from the **auriculotemporal nerve**, which is a branch of the mandibular division of the trigeminal nerve (cranial nerve V). This nerve provides the sensory innervation to the gland.

## **Why the Correct Answer is Right**
The auriculotemporal nerve originates from the **mandibular division of the trigeminal nerve (V3)**. It wraps around the **middle meningeal artery** and passes between the **neck of the mandible and the sphenomandibular ligament**. This nerve provides sensory innervation not only to the **parotid gland** but also to the **temporal region** and the **external auditory meatus**. The auriculotemporal nerve carries sensory fibers that are responsible for transmitting sensory information from the parotid gland.

## **Why Each Wrong Option is Incorrect**
* **Option A:** The **great auricular nerve** primarily provides sensory innervation to the **skin over the parotid gland** and the **angle of the mandible**, not the gland itself.
* **Option B:** The **lesser petrosal nerve** carries parasympathetic fibers from the **otic ganglion** to the **parotid gland**, but it does not provide sensory supply to the gland.
* **Option D:** The **lingual nerve** provides sensory innervation to the **anterior two-thirds of the tongue**, not the parotid gland.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the **auriculotemporal nerve** can be involved in the **referred pain** to the **temple region** from the **parotid gland**, especially in conditions like **parotiditis (mumps)**.

## **Correct Answer:** . **The auriculotemporal nerve**