It opens when the right ventricle empties blood going to the lungs. The Mitral valve that is in the left atrium and the left ventricle, it opens to allow blood to empty from the left atrium into the left ventricle. The Aortic semilunar valve separates the left ventricle from the aorta and opens to allow the left ventricle to empty into the
When the left side of the heart pumps blood along the aorta and around every part of the body, it takes oxygen to the tissues where it is needed and collects nutrients and waste products (Rogers, 67). This is circulation is called the systematic circulation. In
Found beneath the lungs, the diaphragm is a dome-shaped muscle. When this muscle gets tighter, it flattens and the lungs increase in size. This sucks air down into the lungs. Some of the oxygen in the air can then be transferred into your bloodstream. Some of the carbon dioxide in your blood is transferred into the air that is in the lungs.
Aorta largest artey in the body, It takes blood away from the heart to the organs, via the hearts muscular pumping chamber in the left ventricle. This pumps blood into the aorta through the aortic valve. heart consists of four chambers and can be found just behind the breastbone. It is a muscular organ that is at the head of the cardiovascular system. It's main function is to make sure blood gets to the right part of the body depending
It is located at the top of the heart. The function of the aorta is to bring blood containing oxygen from the left ventricle to the rest of the body. 2. Superior vena cava Vein Superior vena cava vein (vena cava) is a large vein in the body. It is located also at the top of the heart.
It moves through the pharynx, larynx, and trachea into the lungs. Then air is exhaled, flowing back through the same pathway. Changes to the volume and air pressure in the lungs trigger breathing. During normal inhalation, the diaphragm and external intercostal muscles contract and the ribcage elevates. As the volume of the lungs increases, air pressure
To permit the pumping of blood, ventricles and atria contract and relax at different time; at the same time, systemic circulation and pulmonary circulations bring blood into atria via vena cava and pulmonary vein respectively. At this moment, the volume of atria increases to receive blood from vena cava and pulmonary vein, and this builds up the pressure which opens atrioventricular valves; opening of atrioventricular valves allow blood to flow from atria to ventricle as well as preventing flow back of blood into atria from ventricles. The flowing of blood into ventricles increases the volume of ventricles; the blood from left ventricle is pumped by the heart via the main artery called aorta to the rest of the body, whereas blood from right ventricle is pumped by the heart via pulmonary artery to the
This pumping of water is achieved by contraction of radial muscles in the mantle wall. Gills are two feathery structures within the mantle cavity where the exchange of gases takes place. Three degrees of lamellae maximizes the surface are of absorption and oxygen diffuses through it when water flows. Lamellae are folded capillary- filled structures. Carbon dioxide leaves through the siphon, where a flapper valves shut the strong circular muscle force the water out.
Cardiovascular diseases (CVDS) Cardiovascular diseases comprise ailments that include the blood vessels (veins, arteries and capillaries) or the heart, or together or diseases that disturb the cardiovascular system. The cardiovascular system, also named as the circulatory system, is the system that transports blood all over the human body. It is composed of the heart, arteries, veins, and capillaries. It delivers oxygenated blood from the lungs and heart through the entire body by the arteries. Blood drives through the capillaries - vessels located between the veins and arteries.
The cardiovascular system gets rid of waste products and oxygen and nutrients is brought to the body by it. This system is made up of the blood, blood vessels and the heart. These work together to transport the oxygen and nutrients. The cardiovascular system additionally helps to control an individuals temperature, spreading proteins and hormones and various other chemicals to different parts of the body. In the cardiovascular system the heart moves the blood around the body (acts like a pump) and different types of blood vessels (e.g.