THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The ECA provides the majority of blood supply to the meninges, scalp, and face. It originates at the carotid bifurcation and lies superficial and medial to the ICA.

Detailed explanation-2: -Your external carotid arteries begin at the carotid bifurcation on either side of your neck. Each external carotid artery travels upward along the side of your neck toward your ear. Near your ear, it divides into its two terminal branches: your maxillary artery and superficial temporal artery.

Detailed explanation-3: -The ear receives the majority of its blood from a branch of the external carotid artery. The external carotid artery gives off a branch called the posterior auricular artery.

Detailed explanation-4: -The occipital artery arises from the external carotid artery opposite the facial artery. Its path is below the posterior belly of digastric to the occipital region. This artery supplies blood to the back of the scalp and sternocleidomastoid muscles, and deep muscles in the back and neck.