arterioles - Page 2

Renin-angiotensin-aldosterone System: Function, Role & Diseases

The renin-angiotensin-aldosterone system controls salt and water balance in the human body and also regulates blood pressure to a certain extent. Various organs, hormones, and enzymes are involved in this regulatory circuit. What is the renin-angiotensin-aldosterone system? The lungs, liver, and kidneys are involved in the regulatory circuit of the renin-angiotensin-aldosterone system. Water and salt … Renin-angiotensin-aldosterone System: Function, Role & Diseases

Neovascularization: Function, Role & Diseases

All processes of new vessel formation that take place in the organism of an adult human are summarized as vascularization, most notably angiogenesis. Neovascularization, on the other hand, is more commonly known as pathological and thus pathologically excessive new formation of vessels. This neovascularization occurs, for example, in the context of cancer and serves to … Neovascularization: Function, Role & Diseases

Arterioles: Structure, Function & Diseases

Arterioles are the smallest of the visible arteries represented throughout the body’s vascular system. Here, they represent the transition of the arteries to the capillaries. However, they are not only there to connect the arteries with the capillaries, but they also regulate the blood pressure and the flow rate of the blood by their width. … Arterioles: Structure, Function & Diseases

Vasculogenesis: Function, Role & Diseases

Vasculogenesis is a process of embryonic development in which the vascular system arises from endothelial progenitor cells. Vasculogenesis is followed by angiogenesis, which causes the first vessels to sprout into the bloodstream. In the broadest sense, cancer can be considered a vasculogenetic problem. What is vasculogenesis? Vasculogenesis is a process of embryonic development in which … Vasculogenesis: Function, Role & Diseases

Vasomotor Function: Function, Tasks, Role & Diseases

Vasomotor function includes all movement processes in the arteries and arterioles. These movements correspond to either contraction and relaxation of the vascular musculature and cause lumenal changes in the vessels. Patients with Raynaud’s syndrome suffer from vasomotor spastic disorders. What is vasomotor spasm? Active movement processes take place in the vessels to transport blood. These … Vasomotor Function: Function, Tasks, Role & Diseases

Axial Migration: Function, Tasks, Role & Diseases

Axial migration in blood flow causes deformable erythrocytes to displace into the axial flow by means of near-wall shear forces in smaller vessels. This creates low-cell marginal flows that prevent stenosis in capillaries. This effect is part of the Fåhraeus-Lindqvist effect and can be limited by changes in the shape of red blood cells (RBCs). … Axial Migration: Function, Tasks, Role & Diseases

Cerebral Blood Flow: Function, Role & Diseases

Cerebral blood flow forms the basis for supplying the nerve cells in the brain with oxygen as well as various nutrients. In a healthy person, it is estimated that about 15 percent of what is called cardiac output flows through the brain. The surrounding tissue is also supplied with blood, with a total of approximately … Cerebral Blood Flow: Function, Role & Diseases

Angiogenesis: Function, Role & Diseases

The term angiogenesis encompasses all metabolic processes that involve the growth or new formation of blood vessels. Angiogenesis represents a complex process involving endothelial progenitor cells, smooth muscle cells, and pericytes. Promotion or inhibition of angiogenesis is increasingly used for therapeutic purposes-particularly in tumor therapy. What is angiogenesis? The term angiogenesis encompasses all metabolic processes … Angiogenesis: Function, Role & Diseases

Bayliss Effect: Function, Tasks, Role & Diseases

The Bayliss effect maintains constant blood flow to organs such as the brain and kidneys despite everyday fluctuations in blood pressure. At elevated pressures, the effect induces vasoconstriction of vascular muscle. Disruption of the Bayliss effect results in persistent hyperemia and edema formation in the extracellular space. What is the Bayliss effect? The Bayliss effect … Bayliss Effect: Function, Tasks, Role & Diseases

Systole: Function, Tasks, Role & Diseases

Systole in clinical parlance refers to the tightening and subsequent contraction phase of the two ventricles of the heart. During the contraction phase, the two leaflet valves through which blood flowed from the two atria into the ventricles are closed, and the two leaflet valves in the left and right ventricles open. Blood is pumped … Systole: Function, Tasks, Role & Diseases

Capillaries: Structure, Function & Diseases

The capillary is the finest human blood vessel. It is essential for supplying nutrients and oxygen to organs and is a vital part in the bloodstream. What are capillaries? The capillary is the smallest human blood vessel and participates in the so-called microcirculation. The thickness of its inner wall layer is only one cell. These … Capillaries: Structure, Function & Diseases

Embolia Cutis Medicamentosa: Causes, Symptoms & Treatment

Embolia cutis medicamentosa is a rare but serious complication that is generally seen following intramuscular injection. The condition is associated with localized skin necrosis, sometimes over large areas, and therapy is lengthy. What is embolia cutis medicamentosa? Embolia cutis medicamentosa (also Nicolau syndrome, livedo dermatitis) is a serious complication resulting from an intramuscular (mostly intragluteal … Embolia Cutis Medicamentosa: Causes, Symptoms & Treatment