Skin over the angle of mandible is supplied by
**Core Concept**
The question is testing the knowledge of the dermatomal distribution of the trigeminal nerve, specifically the area supplied by the mandibular division (V3). The skin over the angle of the mandible receives its sensory innervation from the auriculotemporal nerve, which is a branch of the mandibular division.
**Why the Correct Answer is Right**
The auriculotemporal nerve arises from the mandibular division (V3) of the trigeminal nerve and carries sensory fibers from the skin over the temple, ear, and the angle of the mandible. This nerve is formed by the union of the temporal and auricular branches of the mandibular nerve. The auriculotemporal nerve is also known for transmitting parasympathetic fibers from the otic ganglion to the parotid gland. The correct answer is related to the dermatomal distribution of the trigeminal nerve.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as it does not specify the correct dermatomal distribution of the trigeminal nerve.
* **Option B:** This option is incorrect as it is not related to the dermatomal distribution of the trigeminal nerve.
* **Option D:** This option is incorrect as it is not related to the dermatomal distribution of the trigeminal nerve.
**Clinical Pearl / High-Yield Fact**
The auriculotemporal nerve is a branch of the mandibular division (V3) of the trigeminal nerve and is involved in the transmission of parasympathetic fibers to the parotid gland. This nerve is also responsible for carrying sensory fibers from the skin over the temple, ear, and the angle of the mandible.
**Correct Answer: C. Auriculotemporal nerve**