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Plexus A large network of blood vessels Anastomoses a connecting channel among the vessels Blood leaves the heart through the arteries, to arterioles, to capillaries Blood travels toward the heart through veins, from venules, from venous sinuses. Blood supply is regional arteries supply blood to structures in their vicinity Veins receive blood from all nearby structures Aorta to left common carotid artery and left subclavian artery. Aorta to Right brachiocephalic artery which separates to right common carotid artery and right subclavian artery Both the right and left common carotid arteries have a swelling called the carotid sinus before they branch After the carotid sinuses, both the right and left common carotid arteries split into the Internal and external carotid arteries The Internal Carotid Artery is hidden by the sternocleidomastoid muscle- Is adjacent to the internal jugular vein within the carotid sheath- Has no branches in the neck- In the cranium it forms the opthalmic artery which supplies blood to the eye and lacrimal gland. External carotid artery name the 4 groups of branches Anterior, medial, posterior, and terminal groups. Anterior branches of the external carotid artery Superior thyroid artery, lingual artery, facial artery The superior thyroid artery of the Anterior external carotid artery has 4 sub branches: Infrahyoid, sternocleidomastoid, superior laryngeal and cricothyroid. The lingual artery of the Anterior external carotid artery has 4 sub branches: Dorsal lingual, deep lingual, sublingual, and suprahyoid The facial artery of the Anterior external carotid artery has 6 sub branches: Ascending palatine, glandular, submental, inferior labial, superior labial, and angular Medial branch has the Ascending pharyngeal artery Ascending pharyngeal artery had 2 sub branches: pharyngeal and Meningeal ...