tissues of the body, and back to the right atrium constitutes thesystemic circulation.Blood pressureis greatest in the left ventricle and in the aorta and its arterial branches. Pressure is reduced in thecapillaries(vessels of minute diameter) and is reduced further in the veins returning blood ...
Passing blood from the heart to the limbs and major organs is one functional aspect of the aorta; of equal importance is its capacity to distend and recoil in response to pulsatile flow, thereby reducing afterload for the LV and facilitating diastolic perfusion of the coronary arteries. Intrinsic...
The structure of the nephron and its related blood vessels can best be described pictorially. The basic structure and associated blood vessels are... See full answer below. Learn more about this topic: Parts of the Kidney | Overview & Anatomy ...
The largest artery is theaorta, which arises from the leftventricleof the heart. The aorta arches briefly upward before continuing downward close to the backbone; the arteries that supply blood to the head, neck, and arms arise from this arch and travel upward. As itdescendsalong the backbone...
This is done by the two coronary arteries: left and right. Heart muscles work constantly (thank goodness!), so the heart has a very high nutrient need. The coronary arteries arise from the aortic sinuses at the beginning of the ascending aorta, and then circle the heart–giving off ...
Because the kidney filters blood, its network of blood vessels is an important component of its structure and function. The arteries, veins, and nerves that supply the kidney enter and exit at the renal hilum. Renal blood supply starts with the branching of the aorta into the renal arteries ...
Synonyms: Cavity of abdominal compartment, Cavitas abdominalis The abdomen is the body region found between the thorax and the pelvis. Its superior aperture faces towards the thorax, enclosed by the diaphragm. Inferiorly the abdomen is open to the pelvis, communicating through the superior pelvic...
An artery is an elasticblood vesselthat transportsbloodaway from theheart. This is the opposite function ofveins, which transport blood to the heart. Arteries are components of thecardiovascular system. This system circulates nutrients to and removes waste material from thecells of the body. There...
The walls of arteries are composed of living cells, including smooth muscles cells (SMC), stiff collagen fibers, and compliant elastic fibers. The proximal aorta has large amounts of elastic fibers with fewer collagen fibers, while the lower descending aorta has fewer elastic fibers and more ...
About 5 percent of the blood pumped to the body enters the coronary arteries, which branch from the aorta just above where it emerges from the left ventricle. Three main coronary arteries—the right, the left circumflex, and the left anterior descending—nourish different regions of the heart ...