The deep auricular artery is a small arterial branch that supplies blood to the outer ear. It plays an important role in maintaining the health and function of the ear. There are many synonyms for this term, including deep auricular branch, deep auricular vessel, and posterior auricular artery. Other related terms include the anterior auricular artery, which supplies blood to the front of the ear, and the temporomandibular joint (TMJ) artery, which supplies blood to the jaw joint. When discussing the anatomy and function of the ear, understanding the synonyms and related terms for the deep auricular artery is essential.