In the abdomen, the aorta gives rise to the renal arteries that feed the kidneys and the superior and inferior mesenteric that feed the large and small intestines. Towards the pelvis, the aorta bifurcates into the right and left common iliac arteries.
The Aorta is the first and largest part of the artery system. All smaller arteries come off branches of the aorta, like exits on a highway.
All arteries of the systemic circulation branch from the aorta (this is the largest artery of the body, with a diameter of 2-3 cm), and divide into progressively smaller vessels.
Arteries of the Body Organization. Major arteries figure. Aorta. Head and neck arteries. Torso arteries. Abdomen arteries. Arm arteries. Leg arteries.
The main artery of the lower limb is the femoral artery. It is a continuation of the external iliac artery (terminal branch of the abdominal aorta). The external iliac becomes the femoral artery when it crosses under the inguinal ligament and enters the femoral triangle.
Oxygen rich blood leaves the left side of the heart and enters the aorta. The aorta branches into arteries, which eventually branch into smaller arterioles. Arterioles carry blood and oxygen into the smallest blood vessels, the capillaries. Capillaries are so small they can only be seen under a microscope.
The aorta is so thick that it requires its own capillary network to supply it with sufficient oxygen and nutrients to function, the vasa vasorum. When the left ventricle contracts to force blood into the aorta, the aorta expands.
The widow-maker is a massive heart attack that occurs when the left anterior descending artery ( LAD ) is totally or almost completely blocked. The critical blockage in the artery stops, usually a blood clot, stops all the blood flow to the left side of the heart, causing the heart to stop beating normally.
Blood vessels carry blood around the body. The 3 main types of blood vessels are: arteries that carry blood pumped from the heart — these are the largest and strongest.
Arteries carry blood away from the heart and veins return blood to the heart. Veins are generally larger in diameter, carry more blood volume and have thinner walls in proportion to their lumen. Arteries are smaller, have thicker walls in proportion to their lumen and carry blood under higher pressure than veins.
Veins. Veins carry blood toward the heart. After blood passes through the capillaries, it enters the smallest veins, called venules.
The pulmonary veins carry oxygenated blood from the lungs to the left atrium of the heart. Despite carrying oxygenated blood, this great vessel is still considered a vein because it carries blood towards the heart. Four pulmonary veins enter the left atrium.
These include the great cardiac vein, the middle cardiac vein, the small cardiac vein, the smallest cardiac veins, and the anterior cardiac veins. Coronary veins carry blood with a poor level of oxygen, from the myocardium to the right atrium.
The carotid arteries are a pair of blood vessels located on both sides of your neck that deliver blood to your brain and head.
There are 20 major arteries in the human body, which then branch of into many much smaller arterioles and capillaries.