WebMore. A ventriculoperitoneal (VP) shunt is a narrow plastic tube that drains excess cerebrospinal fluid into your abdomen (belly). Cerebrospinal fluid (CSF) protects your … WebJul 18, 2024 · Definition. Vasoconstriction is the narrowing or even closing of the lumen of a vein, artery, or arteriole as a result of smooth muscle cell constriction in the blood vessel wall. By reducing the diameter of a blood vessel, circulating blood must move through a smaller area under higher pressures. Vasoconstriction is regulated by the autonomic ...
Ventricular Septal Defect (VSD) - Pediatrics - Merck …
Webshunt muscle: [TA] muscle that, rather than producing observable motion, contracts to resist dislocating forces occurring at joints, for example, the coracobrachialis, short head of biceps, and long head of triceps all contract to resist downward dislocating forces at the … WebMeasurements and main results: Anatomical shunt compartment (whole-lung computed tomography scan) and functional shunt (blood gas analysis) were assessed at 5 and 15 cm H2O positive end-expiratory pressures. Apparent perfusion ratio (perfusion per gram of nonaerated tissue/perfusion per gram of total lung tissue) was defined as the ratio of ... phos handtuchhalter
Shunt Definition & Meaning Dictionary.com
WebJan 17, 2024 · Skeletal Muscle Pump. Skeletal muscles also play a key role in the movement of blood around the body. Veins embedded within a muscle are compressed during contraction of that muscle, causing an increase in blood pressure due to the presence of one-way valves within the veins. This increase in pressure drives the blood towards the … WebJan 1, 1979 · The distinction between so called spurt muscles and shunt muscles, as postulated by McConaill (1949), is based on simple goniometric calculations with reference to the geometry of muscle attachments. These calculations bear some essential errors, which undermine the spurt-shunt muscle model completely. WebVascular shunt mechanism. Redistribution of blood flow during exercise. When at rest the muscles receive a relatively small amount of blood as they are not active. During exercise the distribution of blood changes. A great deal more blood is required by the muscles for movement. The diagrams show the changes. phos harlingen tx