Ascending pharyngeal artery

Diagram showing the branches of the external carotid artery, including the ascending pharyngeal artery.

The ascending pharyngeal artery is a small but significant artery in the head and neck region. It is one of the branches of the external carotid artery, and it plays a crucial role in supplying blood to various structures in the pharyngeal region.

Anatomy

The ascending pharyngeal artery is the smallest branch of the external carotid artery. It arises from the posterior aspect of the external carotid artery, near its origin. The artery ascends vertically between the internal carotid artery and the side of the pharynx.

Ascending pharyngeal artery illustration.

Branches

The ascending pharyngeal artery gives off several branches that supply different areas:

• Pharyngeal branches: These branches supply the pharynx, including the pharyngeal constrictor muscles and the soft palate.
• Meningeal branches: These branches enter the cranial cavity through the foramen lacerum and jugular foramen to supply the dura mater.
• Inferior tympanic artery: This branch supplies the tympanic cavity and anastomoses with the anterior tympanic artery.

Function

The primary function of the ascending pharyngeal artery is to supply blood to the pharynx, the prevertebral muscles, and the cranial meninges. It also contributes to the vascular supply of the middle ear and the soft palate.

Clinical Significance

The ascending pharyngeal artery is of clinical importance due to its involvement in various medical conditions. It can be a source of bleeding in cases of epistaxis (nosebleeds) and is sometimes involved in tumors of the head and neck region. Its proximity to the internal carotid artery makes it a critical structure during surgical procedures in the neck.

Related Pages

• External carotid artery
• Internal carotid artery
• Pharynx
• Dura mater
• Middle ear