The external carotid artery is a major blood vessel that supplies blood to the face, scalp, and neck. It arises from the common carotid artery, which is located in the neck, and travels upward toward the head.
The external carotid artery does not typically enter through the posteromedial surface. Instead, it typically enters the neck region laterally and travels upward towards the head.
The posteromedial surface of the neck is located on the back of the neck and is not a typical location for the external carotid artery to enter. However, in rare cases, the external carotid artery may have an anomalous origin and enter through an unusual location.
It is important to note that any anomalous origins of the external carotid artery can have clinical implications and may increase the risk of complications during surgical procedures or other interventions involving the neck and head. Therefore, it is important for healthcare providers to be aware of any anatomical variations in their patients.