Arterial supply of Submandibular gland
**Core Concept**
The submandibular gland receives its arterial supply from the facial artery and the lingual artery, which are branches of the external carotid artery. This dual blood supply is crucial for the gland's function and maintenance.
**Why the Correct Answer is Right**
The facial artery, specifically its submental branch, supplies the anterior part of the gland, while the lingual artery supplies the posterior part. This dual supply allows for the gland's continued function even if one of the arteries is compromised. The arterial supply is essential for the gland's secretion of saliva, which plays a vital role in oral hygiene and digestion.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not specify the correct arteries supplying the gland.
**Option B:** This option is incorrect as it mentions the external carotid artery but does not specify its branches.
**Option C:** This option is incorrect as it mentions the maxillary artery, which supplies the parotid gland, not the submandibular gland.
**Clinical Pearl / High-Yield Fact**
The submandibular gland's dual blood supply makes it a unique case among salivary glands, and this knowledge is essential for understanding the gland's function and potential complications during surgery.
**Correct Answer: A. Facial artery and lingual artery.**