Main arterial supply to the tongue is:
**Core Concept**
The arterial supply to the tongue is primarily derived from branches of the external carotid artery, highlighting the importance of **external carotid artery** branches in supplying blood to various structures in the head and neck. The tongue's blood supply is crucial for its functions, including taste, mastication, and speech.
**Why the Correct Answer is Right**
The main arterial supply to the tongue is through the **lingual artery**, a branch of the external carotid artery. This artery provides the necessary blood flow for the tongue's metabolic needs and functions. The lingual artery is responsible for supplying oxygenated blood to the tongue, allowing it to perform its various functions efficiently.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it does not specifically refer to the primary arterial supply of the tongue.
**Option B:** Incorrect as it is not the main arterial supply to the tongue.
**Option C:** Incorrect because, although related to the head and neck, it is not the primary supply to the tongue.
**Clinical Pearl / High-Yield Fact**
The **lingual artery** is a key structure in head and neck anatomy, and its knowledge is crucial for surgical and clinical procedures involving the tongue.
**Correct Answer:** D. Lingual artery.