What Are Arteries?


Coronary artery disease and carotid artery disease are two common examples of arterial disease. These conditions are often devoid of symptoms and can only be detected when plaque builds up inside the artery. The plaque can become stiff over time, narrowing and blocking the arteries. Lifestyle changes can help prevent and treat artery disease. In addition to visiting a doctor, you can learn how to prevent and treat artery disease from getting worse.

The walls of arteries are composed of elastic tissue and less smooth muscle, allowing them to expand and contract. This helps regulate blood pressure. Vascular arteries, which exit the heart, have more elastic tissue than their muscular counterparts. Muscular arteries, on the other hand, contain more smooth muscle fiber. When these walls contract, blood flow decreases. This process is called stenosis. Arteries are found in all parts of the body and contribute up to 10% to 15% of blood volume.

The main function of the arteries is to carry blood away from the heart. In this way, it delivers oxygen and nutrients to the tissues. The carotid artery supplies blood to the head and brain, the subclavian artery supplies blood to the arms and neck, and the mesenteric artery transports deoxygenated blood to the placenta and digestive system. The artery’s effective blood volume is the amount of extracellular fluid carried by the body.

The aorta, the largest artery in the body, originates from the left ventricle. From here, it branches into lower body arteries near the pelvis. The vena cava is located in the upper right portion of the chest and near the right side of the diaphragm. The inferior vena cava is located near the right side of the diaphragm and supplies blood to the legs.

The artery’s inner structure is made up of smooth muscle cells. The smooth muscles reside within the tunica media, which is the surrounding tissue. Both smooth muscles and skeletal muscle contractions help regulate blood flow. They also make up the outer wall of the blood vessels. The aorta is about two centimeters in diameter. Aortas can be very large, whereas capillaries are smaller, ranging from two to twelve micrometers.

The pulmonary artery, also known as the pulmonary artery, delivers deoxygenated blood from the lungs to the heart. This deoxygenated blood is returned to the heart via the pulmonary vein. Unlike veins, arteries are characterized by higher pressure, resulting in thicker and elastin tissue. An overview of artery anatomy can help you understand the difference between veins and arteries. If you’re unsure about the difference between the two, please contact your local physician.

The inner wall of an artery is composed of three layers. The tunica intima is the innermost layer. It is made of smooth muscle cells and elastic fibers. The tunica media, or outer layer, is composed of varying amounts of collagen and connective tissues. Larger arteries have thicker tunica media and tunica adventitia. However, you should never ignore the importance of healthy arteries and veins.