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Vasodilation plays a major role in immune system function. Wider blood vessels allow more blood containing immune cells and proteins to reach the infection site. Vasodilation occurs as part of the process of inflammation, which is caused by several factors including presence of a pathogen, injury to tissues or blood vessels, and immune ...
Coronary occlusion is caused by plaque inside of the blood vessels that direct oxygen rich blood to the heart. [8] Plaque is caused by fatty deposits and scar tissue that cling to the walls of coronary arteries. [9] The development of plaque takes years and leads to stenosis of the coronary arteries and progressively reduces blood flow. [8]
Metabolic control, which consists of metabolites and paracrine agents released from surrounding tissue that act on the blood vessel(s). For example, as tissue metabolism increases, driving up oxygen demand, the amount of available oxygen decreases, driving down the pH and triggering a release in adenosine , which triggers the blood vessel to ...
Vascular occlusion is a blockage of a blood vessel, usually with a clot. It differs from thrombosis in that it can be used to describe any form of blockage, not just one formed by a clot. When it occurs in a major vein , it can, in some cases, cause deep vein thrombosis .
[1] [2] It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and from Latin vascula meaning vessels). The circulatory system has two divisions, a systemic circulation or circuit , and a pulmonary circulation or circuit . [ 3 ]
Most vessels of the microcirculation are lined by flattened cells of the endothelium and many of them are surrounded by contractile cells called pericytes.The endothelium provides a smooth surface for the flow of blood and regulates the movement of water and dissolved materials in the interstitial plasma between the blood and the tissues.
Hemodynamics explains the physical laws that govern the flow of blood in the blood vessels. Blood flow ensures the transportation of nutrients, hormones, metabolic waste products, oxygen, and carbon dioxide throughout the body to maintain cell-level metabolism, the regulation of the pH, osmotic pressure and temperature of the whole body, and ...
Together with the cardiovascular center and respiratory center, it regulates blood pressure. [1] It also has a more minor role in other homeostatic processes. [citation needed] Upon increase in carbon dioxide level at central chemoreceptors, it stimulates the sympathetic system to constrict vessels