Research vessel

The heart is one of the strongest muscles in the human body. It is mostly made up of cardiac muscle, which causes the contractions of the heart, or heartbeat. The cardiac muscle works constantly to pump blood throughout the body and is one of the three major types of muscle. The cells in the heart are closely connected so that they all beat at the same time, and they form the thick middle layer of the heart, in between the outer epicardium and the inner endocardium layers. There are two main…

a lot of theories and researched that covers the topic about computed tomography perfusion (CTP) to roll- out acute stroke. However my literature search was made to encourage the UAE to do a CT perfusion for patient who has acute stroke. This research is very important because it will help them to safe the patient’s life within the golden hours. In addition, CTP has an advantage to outline ischemic areas of the brain which may be recovered by intervention (e.g. thrombolysis ), known as the…

During one year, the heart initiates approximately 32 million heartbeats to pump blood around the body, beating a total of 60-80 times per minute at a normal pace. It is a highly efficient organ and constantly works to keep our blood circulation going and ourselves alive. The high efficiency of the heart pumping system originates in a conductive system, which is linked to the Sinoatrial (S-A) and Atrioventricular (A-V) node. The Sinoatrial node, also known as the natural cardiac pacemaker, is…

TASK 1 HEART The heart is a muscular organ that pumps blood throughout the body (Chiras, 2008). STRUCTURE The heart wall is composed of three layers of tissues: pericardium, myocardium and endocardium (Wilson, Waugh and Ross, 1996). Label structures of the heart for the diagram. Aorta is the major artery that carries oxygenated blood to the body. Pulmonary veins carry oxygenated blood from the lungs into the heart. Left atrium is one of the left upper chambers that takes oxygenated blood from…

Heart rate and coronary perfusion is not correlated. An increase or decrease in heart rate along does not necessarily impact the coronary perfusion. In most cases, it is the vasodilation and vasoconstriction in either health or platelet aggregated vessels that impact coronary perfusion. B. (Incorrect) Any change in the contractility of the heart is able to effect the level of myocardial workload. Contractility does not impair coronary blood flow.…

The article, Mass Transport in an Anatomically Realistic Human Right Coronary Artery, written by M.R Kaazempur-Mofrad and C.R. Ethier, analyzes mass transport patterns in a realistic right coronary artery model and looks at what affects mass transport from blood to the wall of the artery. The researchers were looking for any relationships between atherosclerosis, a disease of the arteries characterized by built up plaque on their inner walls, and hemodynamic and mass transport patterns. To…

Purpose: Our previous computer models suggested that intraluminal thrombus (ILT) within an abdominal aortic aneurysm (AAA) attenuates oxygen diffusion to the AAA wall, possibly causing localized hypoxia and contributing to wall weakening. The purpose of this work was to investigate this possibility. Methods: In one arm of this study, patients with AAA were placed in one of two groups: (1) those with an ILT of 4- mm or greater thickness on the anterior surface or (2) those with little (< 4 mm)…

Venous return is the flow of blood back to the heart. This process is achieved by five mechanisms. The Pressure Gradient, now this mechanisms work via the heart generating pressure even though the pressure is weaker in the veins than in the arteries it is still the most important force in the venous flow. Gravity, but only when you are sitting or standing anywhere above the heart simple gravity is at work in returning blood back to the heart, not to say that very thing isn’t still working…

the endothelial function, agents such as angiotensin converting-enzymes, B-hydroxymethylglutaryl coenzyme were used. In this study, 19 patients under the age of 70 participated. Patients that participated in the study were required to have a target vessel that had signs of endothelial disfunction. Endothelial disfunction can be defined as decrease of more than five percent in mean luminal diameter or no change in response to acetylcholine. Also, patients had to show no symptoms while exercising…

Task 2 Part A Cebita Santhosh Q1. The three main types of blood vessels in the circulatory system are veins, arteries and capillaries. The veins carry deoxygenated blood from the capillaries back to the heart. The arteries carry blood away from the heart to your tissues. The capillaries are the smallest of the body's blood vessels, only one cell thick and are found in the muscles and lungs. Q2. Eating too much salt can raise your blood pressure because of the extra water stored in the…