Blood supply of little’s area are:
**Core Concept**
Little's area, also known as the Killian's dehiscence, is a weak area in the mucous membrane of the larynx where the epiglottis meets the arytenoid cartilages. This area is prone to rupture due to its thin mucosal lining and rich blood supply.
**Why the Correct Answer is Right**
The blood supply to Little's area is primarily derived from the laryngeal branches of the superior laryngeal artery. This artery branches off from the superior thyroid artery, which in turn arises from the external carotid artery. The laryngeal branches supply the epiglottis, aryepiglottic folds, and the arytenoid cartilages, including Little's area. The rich blood supply to this region makes it vulnerable to bleeding.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify the correct arteries supplying Little's area.
**Option B:** This option is incorrect because it does not mention the laryngeal branches of the superior laryngeal artery, which are responsible for supplying the area.
**Option C:** This option is incorrect because it mentions the inferior thyroid artery, which mainly supplies the thyroid gland and does not contribute to the blood supply of Little's area.
**Clinical Pearl / High-Yield Fact**
It is essential to note that the blood supply to Little's area is rich and makes it prone to bleeding, especially during endoscopic procedures or trauma. This knowledge is crucial for surgeons and anesthesiologists to anticipate and manage potential bleeding complications.
**Correct Answer: D. The laryngeal branches of the superior laryngeal artery.**