Blood Supply of Head and Neck

Blood supply to the head and neck consists of arterial blood supply from arteries and veins and intravenous drainage, respectively. Because these vessels can be at risk of extinction due to disease processes or surgical procedures, medical students must understand the location of larger vessels in the head and neck. In addition, blood vessels spread the infection to the head and neck. In addition, they can also disperse cancer cells far from the malignant tumor (metastasis) and at a faster rate than the lymph vessels. Vessels are much less than lymph vessels, but veins are usually parallel to lymph vessels.

The subclavian artery and the common carotid artery supply arteries to the head and neck. The main artery of the head and neck are the left and right common carotid arteries, and each artery is divided into (a) external carotid artery and (b) internal carotid artery. The external carotid artery supplies the structure of the outer part of the head and the larger part of the neck. The internal carotid arteries supply structures to the cranial cavity and the orbit. The common carotid artery, the external carotid artery and the internal carotid artery form the carotid artery system. The arterial carotid artery system is the main source of blood supply to the head and neck arteries.

The main veins flowing out of the head and neck are subclavian veins, intracranial, extracranial, and anterior jugular vein. The internal jugular vein is the main vein of the head and neck area, because it empties the brain and can be used as a major part of other tissues of the head and neck. The external jugular vein removes only a part of the extracranial tissue

Unlike the rest of the body, the valve in the lumen is substantially absent in the vein exiting the head and neck region. This results in a bi-directional flow of blood ordered by local pressure changes. Therefore, head and neck disease may cause serious complications

The carotid artery sheath is from the top of the skull to the lower aortic arch. At the top, it is attached to the end of the carotid vessel and the jugular vein.

The upper part of the carotid artery sheath contains the internal carotid artery, the internal jugular vein and the last four cranial nerves. Its interior lies in the pharynx and is located laterally at the styloid process, the anterior portion of the orbital fossa and the posterior portion of the cervical sympathetic trunk.

The lower part of the carotid artery sheath contains common carotid artery, internal jugular vein and vagus nerve.

The five elongated structures associated with stem-like processes are similar to the reins of tanks. Two of these reins (ligaments) are not elastic and the remaining three reins (muscles) are flexible, each controlled by a separate cranial nerve, eg, a bagpipe, a ventricle, and a sexual tongue muscle, respectively. 9 and 12 cranial nerves are offered.

The neck is part of the body of many vertebrates and separates the head from the torso. It includes blood vessels and nerves that provide a body structure for the head. These include the human esophagus, the larynx, the trachea, a part of the thyroid gland, the main vessel including the carotid artery and the jugular vein, and the top of the spinal cord. Anatomically, the neck is also called Latin name, cervix, or neck. Thus, the cervix of an adjective can refer to the neck (such as the cervix or cervical lymph nodes) or the cervix (such as a cervical cap or cervical cancer).

Blood supply to the head and neck consists of arterial blood supply from arteries and veins and intravenous drainage, respectively. Because these vessels can be at risk of extinction due to disease processes or surgical procedures, medical students must understand the location of larger vessels in the head and neck. In addition, blood vessels spread infection to the head and neck. In addition, they can also disperse cancer cells far from the malignant tumor (metastasis) and at a faster rate than the lymph vessels. Vessels are much less than lymph vessels, but veins are usually parallel to lymph vessels.