Pulmonary vein

Aneurysm is a common disease affecting about half of the world population, mostly find in men. Aneurysm origin is usually the walls of the blood vessels or the branches of the arteries. As the Aneurysm grows it tends to get larger in the walls of the arteries which can cause discomfort. There are two main types of aneurysm: cerebral aneurysm and aorta aneurysm. An aneurysm can be diagnose with .Regular screening or x-ray, and once taken place, the doctor can determine if surgery is needed…

Blood is the only liquid in the body that is classified as connective tissue. Its function is to transport oxygen, metabolic wastes such as carbon dioxide and nitrogenous waste from the kidneys. Regulation of the body’s pH, body temperature, and maintenance of the liquid volume in the circulatory system. Lastly, protection by way of Leukocyte activation and preventing blood loss by way of the platelets in the blood. Blood is composed of 55% plasma (water, salts, plasma proteins, and other…

Blood pressure is the pressure applied by blood on the walls of blood vessels, it is controlled by a negative feedback system where heart rate and blood volume need to be altered in order to control the pressure. Local negative feedback systems and heart rate is regulated but the cardiovascular centre which also in turn controls neural and hormonal mechanisms. Neurons regulate heart rate and contractility and some neurons inhibit, stimulate or control heart rate by causing constriction which…

A polygraph is a common instrument of measurement to calculate and document physiological aspects such as respiration rate, electrodermal activity, and heart rate. The relevant uses of measuring respiration rate as well as heart rate are quite common in a wide variety of applications. However, electrodermal activity and the galvanic skin response are not commonly measured things in places such as the medical field, or education. Electrodermal activity (EDA) refers to the variation of the…

fluid loss occur in many different ways, however because the most common cause is of severe blood loss, it is best to first discuss types of hemorrhage and the care that follows. Severe hemorrhage is most often caused by a tear in a major artery or vein that are located deep below skin and muscle tissue (Red Cross 160). A tear can be result of an external wound or from damage to internal structures, both display different symptoms and require different…

A) Explain why transport systems are required in the body? The reasons as to why transport systems are required in the body is because it allows the body to be able to respire and be able to get all that it needs to maintain the same state, for example, oxygen throughout the body as well as nutrients to the cells in the body. An example of a transport system is the Respiratory system. This system is required in the body as it helps the body to take in oxygen, this can be done through the lungs,…

forming blood clots to prevent excess blood loss, carrying cells and antibodies that fight infection, bringing waste products to the kidneys and liver, which filter and clean the blood, and regulating body temperature. The blood that runs through the veins, arteries, and capillaries is known as whole blood, a mixture of about 55 percent plasma and 45 percent blood cells. About 7 to 8 percent of your total body weight is blood. An average-sized man has about…

Over the years, biologists have carried out experiments to explore the differences in animal hearts. With regards to this experiment at hand, the differences were explored between mammalian and amphibian hearts. This experiment also helps us determine the effects of external, biological factors and pharmacological substances on the contraction of the heart. The following will serve as an overview of the structure and functioning of amphibian heart. A frog heart has three chambers (two atria and…

Breathing air in and out is the first step to the respiration process. Respiration is a series of metabolic reactions and processes that take place within the cells of organisms. The organisms store biochemical energy within adenosine triphosphate (ATP) molecules. For the process to being, we must first draw air into our lungs. The lungs muscles contract and expand the chest cavity, causing a negative or hypotonic pressure within the pleural cavity. The hypotonic pressure then forces the lungs…

The heart’s role for the entire body is not only limited to pumping blood. It also needs its own blood supply to be able to perform its several functions. The process of the heart managing its own blood supply is known as coronary circulation. The walls situated in the heart have systemic blood vessels. These exist to meet the needs of the heart for blood supply. Oxygenated blood is brought to the myocardium via the left and right coronary arteries. They are also responsible for bringing the…