The human body roughly consist of 1.5 gallons of blood. Blood is a red liquid that circulates throughout the body through arteries and veins. This red liquid is pumped through the arteries and veins by the heart. Cardio- is a prefix that means heart. So, putting two and two together, the cardiovascular system pertains to the heart. The following essay will break down how the blood and heart function in the body.
The Heart is hollow organ which is composed of four muscular chambers the right and left atrium and ventricles that is specialized for pumping blood throughout the body. The heart is also consists of four valve; two atrioventricular valve which is the bicuspid and tricuspid valve that is allowing blood to flow in the atria and closes when there is a increase ventricular pressure that prevent backflow into the atria as ventricles contract (Craft, Gordon, and Tiziani, 2011), and the semilunar valves which include the pulmonary and aortic valves is located at the exit of the large arteries from the ventricles that opens when there is intraventricular pressure exceeded the aortic and pulmonary pressure which allows the blood flow into the systemic
The cardiovascular system is formed by the heart and the vasculature, a close system of vessels, which include arteries, arterioles, capillaries, venules, veins and lymph vessels.
The heart is divided into four chambers, upper left, upper right atrias, lower left and lower right ventricles. The right atrium and ventricle are called the right hearts and the left as the left hearts. The heart is enclosed in a protective sac, the pericardium, which contains a small amount of fluid. There are
The cardiovascular system is a very complex system in that includes not only the main organ the heart, but also the arteries, veins, and capillaries as well, and even the liver. So, one questions a lot of people may ask is how does the heart work in order to keep us alive day in and day out. Well, that answer is quite simple the heart pumps blood through the superior and inferior vena cava and it then pumps to the lungs to pick up oxygen and then back out through the aorta to the rest of the body. However, if someone wants to know the details and complexity of the heart, it would be like this. So there are multiple chambers in the heart. The heart has four chambers an upper right and left that are called atria, while the lower right and
Before understanding the physical theories behind the heart, it is useful to understand a little bit about the physiology of the heart. The heart is divided into four chambers: two atria on top and two ventricles on the bottom. The atrium and ventricles are separated by valves and the septum separates the right and left sides of the heart.3 Blood returns to the heart from the body through the veins, enters the right atrium and then flows to the
The human heart is a found within the chest cavity surrounded by the lungs. Roughly the size of a fist, the heart is a tenacious automated muscular unit that directs oxygenated blood through a sequence of four chambers. Inside these chambers there are four corresponding valves which permit blood to travel in the forward direction. On any given day the heart beats 100,000, and is capable of perfusing blood throughout the bodies’ 60,000 mile system of blood vessels (Christensen & Kockrow, 2011).
The heart is one of the strongest muscles in the body. According to Henry Gray's “Anatomy of the Human Body” (2015), the heart is roughly the size of a large fist and weighs between about 10 to 12 ounces (280 to 340 grams) in men and 8 to 10 ounces (230 to 280 grams) in women (Lewis, 2015). The human heart has four chambers: two upper chambers (the atria) and two lower ones (the ventricles). The heart's outer wall consists of three layers; epicardium (outermost wall), myocardium (middle wall), endocardium (inner layer). The tricuspid valve and the mitral valve make up the atrioventricular (AV) valves, which connect the atria and the ventricles (Lewis, 2015). The function of the heart is divided into two pathways: the pulmonary circuit and the systemic circuit. In the pulmonary circuit, deoxygenated blood travels to the lungs by way of the pulmonary artery, then returns as oxygenated blood to the left atrium of the heart via the pulmonary vein. The systemic circuit, delivers oxygenated blood to the body from the left ventricle to the aorta, and from there enters the arteries and capillaries where it supplies the body's tissues with oxygen. Then, deoxygenated blood returns through the veins to the venae cavae, re-entering the heart's right atrium to restart the
The heart is basically a pump that has to circulate the blood around the body delivering oxygenated blood to our organs and then returning deoxygenated blood to our lungs. There are four chambers in the heart, two atria and two ventricles. There are four main valves, mitral, aortic, tricuspid and pulmonary7b.
A healthy heart pumps blood continuously through the circlutory system. It’s normal size is a little larger than a fist. The heart has four chambers, two on the right and two on the left. The two upper chambers are called the atria and the lower two are known as the ventricles. The right atrium takes in deoxygenated blood from the rest of body and sends it back out to the lungs through the right ventricle where the blood becomes oxygenated. Oxygenated blood travels from the lungs to the left atrium, then onto the left ventricle, which pumps it to the rest of the body.
The heart has two sides, separated by an inner wall called the septum. The right side of the heart pumps blood to the lungs to pick up oxygen. The left side of the heart receives the oxygen-rich blood from the lungs and pumps it to the body. The heart has four chambers and four valves and is connected to various blood vessels. Veins are blood vessels that carry blood from the body to the heart. Arteries are blood vessels that carry blood away from the heart to the body.