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Major arteries. By definition, an artery is a vessel that conducts blood from the heart to the periphery. All arteries carry oxygenated blood–except for the pulmonary artery. The largest artery in the body is the aorta and it is divided into four parts: ascending aorta, aortic arch, thoracic aorta, and abdominal aorta.
What are the main arteries of the body? Illustrations and lists breakdown this major part of your circulatory system.
The major arteries in the body are: The aorta. The largest artery in the body, which connects directly to the left ventricle of the heart. It begins the systemic division of the arterial system, which includes all the arteries that deliver blood to all the tissues in the body other than the lungs. Arteries of the head and neck (carotids)
Arteries, part of your circulatory (cardiovascular) system, are the blood vessels that bring oxygen-rich blood from your heart to all of your body’s cells. They play a crucial role in distributing oxygen, nutrients and hormones throughout your body.
The Three Major Types of Blood Vessels: Arteries, Veins, and Capillaries. Blood vessels flow blood throughout the body. Arteries transport blood away from the heart. Veins return blood back toward the heart. Capillaries surround body cells and tissues to deliver and absorb oxygen, nutrients, and other substances.
The main artery is your aorta, which connects to the left side of your heart. It runs down through your chest, diaphragm and abdomen, branching off in many areas. Near your pelvis, your aorta branches into two arteries that supply blood to your lower body and legs. The main vein in your body is the vena cava.
Your circulatory system functions with the help of blood vessels that include arteries, veins and capillaries. These blood vessels work with your heart and lungs to continuously circulate blood through your body.
The head and neck are drained by three major, paired veins: Internal jugular vein, which drains the majority of the face, brain, and neck. Subclavian vein, which primarily drains the upper limb, but also collects some blood from the neck. Brachiocephalic veins, which arise from the confluence of the same-sided internal jugular and subclavian veins.
Systemic arteries take oxygen-rich blood from the left ventricle to the body’s tissues. Systemic veins move blood with low levels of oxygen from the body’s tissues to the heart’s right atrium.
Arteries and veins consist of three layers: an outer tunica externa, a middle tunica media, and an inner tunica intima. Capillaries consist of a single layer of epithelial cells, the tunica intima. (credit: modification of work by NCI, NIH)