Circulation

Studies looking at coronary collateral circulation in humans are typically more controversial. Skeptics have stated that collateral development is probably due to the progression of coronary artery disease rather than an effect of exercise training. In addition, direct measurement of collateral growth, typically through coronary angiographic techniques, is difficult and may have severe limitations due to low levels of resolution of vessels (Heaps et al., 2011). Small vessels involved in the coronary

functioning of the deep ocean thermohaline circulation. What is the Thermohaline circulation? The Circulation of the world’s oceans can be divided into the upper and the lower. The upper few 100 metres movement is generally wind-driven whereas below this, circulation is driven by the heating and cooling of waters producing regional density differences. This creates the ‘Thermohaline circulation’ (THC), otherwise known as the Great ocean conveyer, an overturning circulation system. Waters move extremely slowly

The UVA loop consists of pulsatile left and right cardiac simulators, used to simulate pulsating functions of the left and right ventricles. Venous and arterial compliances are modeled by air and water tanks, while tygon tubes are used to model flow resistance of the venous, arterial flows. The variation in system resistance characteristics under different cardiac pressure and flow conditions are modeled by a tuning clamp. The mock circulatory loop was tuned to simulate several pathological and normal

General Circulation Warm air rises and cool air sinks, or subsides. If the Earth had no continents and did not turn, then the circulation of the atmosphere would appear much like this. [pic] http://maritime.haifa.ac.il/departm/lessons/ocean/lect14.htm The air at the Equator would be heated by the warm Earth and so rise, flow toward the poles where it is cooled by the cold Earth, subside at the North Pole and South Pole, and then flow back to the Equator along the surface of the Earth. But the

Cerebral Circulation A constant flow of blood to the brain is vital to its proper functioning. Blood supplies the brain with oxygen and to perform maximally the brain requires about 25% of the body’s oxygen (Webb, 2016). Lack of oxygen for a prolonged period results in cell death causing irreversible damage to the brain. Two paired arteries, four total, supply the vital source of blood to the brain and spinal cord. Arterial Structures Blood supply to the brain is divided between the internal carotid

Cerebral circulation Cerebral circulation is the movement of blood through the blood vessels to supply the brain.As brain is the most complicated structure of our body,it needs lots of energy,and then it needs lots of blood supply.Almost 20 percent blood of the body is used by the brain.And the rate of the cerebral blood flow is 750ml per minute for an adult,representing 15 percent of the cardiac output.The arteries deliver oxygenated blood,glucose,and some other nutrients to the brain to make it

atmosphere - it is being absorbed into the oceans - the reason why is not known, but “a slowdown of the ocean's overturning circulation” (sciencedaily.com) is likely to be the cause. The article supports the claim by stating that the discoveries are in the reputable Nature journal. Next, the article quoted UC Santa Barbara geographer Timothy DeVries stating that the circulation slowdown is thought to be a result of human activity from heating and freshening the ocean’s surface which causes melted

There are two primary circulation loops in the human body known as pulmonary circulation loops and systemic circulation loops. o Pulmonary circulation loops: is responsible for transporting oxygenate-poor blood from right atrium, to the right ventricle and then to the lung. The blood then picks oxygen in the lung and then returns to the left atrium. o Systemic circulation loops: then systemic circulation loops transport the oxygenate-rich blood from the left atrium to then left ventricle. From

In William Harvey’s “A Life in Circulation” by Thomas Wright, he proposed the theory of the heart and circulation of the blood. His theory represents an original and direct challenge to the traditional views on the functions of the heart and motion of the blood that existed in the Roman times. On May 18th, 1636, William Harvey gave an anatomical lecture at the University of Altdorf to prove his debatable theory of the circulation of the blood. As he entered the theatre, there was a dissection table

Cerebrovascular circulation is the movement of blood through the central veins and arteries supplying the brain. Blood supply to the brain is very important and with the help of four main arteries that is achieved. Those four main arteries consist of the left and right internal carotid arteries and the left and right vertebral arteries. When there is an area of blockage or plaque formation in these vessels then a problem may occur. Carotid artery disease is common and increases the risk of having