The Cardiovascular System
The cardiovascular system is made up of the heart, blood vessels and the blood and its main functions include the transportation of blood around the body, protection from invading microorganisms and to prevent blood loss through haemostasis. (Widamaier, et al 2011:5)
One of the main organs of the cardiovascular system is the heart; the heart is made up of four chambers. The blood enters the right atrium of the heart from body through the venae cavae, it then travels though the tricuspid atrioventricular valve into the right ventricle. The blood is then pumped through the pulmonary semilunar valve out of the heart to the lungs using the pulmonary arteries. It is then oxygenated and returns to the left atrium in the pulmonary veins it travels through the mitral atrioventricular valve into the left ventricle and is then pumped out of the heart to the systematic circulatory system passing through the aortic semilunar valve into the aorta. (Widamaier, et al 2011:359)
The heart is situated in the thoracic cavity protected by a sac called the pericardium. The inner heart wall is made up of three layers the outside of the heart wall is called the epicardium this lubricates the heart and prevents friction. The middle and thickest layer of the heart, called the myocardium, is a thick muscular layer built up of cardiac muscle which is responsible for pumping blood. The thickness of the myocardium varies throughout the heart, the atria does not need as much myocardium as the ventricles as the atria only need enough pressure to pimp the blood to the ventricles whereas the ventricles need enough pressure to pump blood to the lungs and the body. The left ventricle has a thicker myocardium layer than the right as the le...
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...njury. (Widamaier, et al 2011:354)
The cardiovascular system is made up of the heart which pumps blood to the lungs through pulmonary circulation, the heart muscle through cardial circulation and the body systems through systematic circulation. It is made up of various chambers and valves and its cycle is controlled by an electrical signal originating in the heart itself. There are various different vessels which control the blood flow throughout the body. Which include high pressure arteries and arterioles originate from the heart. Capillaries which have a semipermeable membrane that allows the exchange of gasses, nutrients and wastes between the blood and the tissues. Also veins which are low pressure and contain valves that prevent backflow. All of these together perform the main functions of the cardiovascular system; protection, transportation and regulation.
Every one of these parts has a specific job so that system can work properly. The main function of the circulatory system is a basic loop the starts and finishes in the heart. Specifically, the system starts in the right atrium, the upper right chamber of the heart. As the blood is flowing through here, it continues through the other three chambers of the heart. After this, it goes straight to the lungs to eliminate any carbon dioxide and to collect oxygen and then end in the lower left hand chamber called the left
One important body system is the circulatory system. The systems job is to pump blood to all parts of the body. The blood circulates inside of many tubes and blood vessels which are found in your body. Blood vessels carry the blood to all parts of the body. Oxygen goes into the blood every time we take a breath. Carbon dioxide is a kind of gas. The blood carries carbon dioxide from the cells to the lungs. When a person breathes out, the body is getting rid of carbon dioxide. Your circulatory system works twenty-four hours a day, seven days a week. It even works when you are sleeping. The circulatory system delivers food, fluids and chemicals to cells throughout your body. It helps to clear your body of waste and carries cells that fight diseases. If your circulatory system would stop working, your cells would starve. Sometimes a doctor would give a patient a vaccine directly into the circulatory system so the medicine should travel to the parts of the body that need it. The circulatory system is made up of three main parts: the heart, the blood vessels, and the blood. The two main kinds of blood vessels are arteries and veins. There are also smaller vessels called capillaries. Arteries and veins are connected by capillaries. A heart of a human is a muscle. The heart has a left side and right side. On the right side, blood enters the heart from the body and then goes from the right side of the heart and to the lungs. In the lungs, it picks up oxygen and returns to the left side of the heart. The oxygen and the blood are then pumped to the body. The heart contains valves. The valves function is to keep the blood flowing in one direction. Each side of the heart is divided into two parts. The upper chamber is called an...
The cardiovascular system - The cardiovascular system is responsible for transporting nutrients and removing gaseous waste from the body. It consists of the heart, which powers the whole process, the veins, arteries, and capillaries, which deliver oxygen to tissue at the cellular level. The cardiovascular system carries blood that is low in oxygen away from the heart to the lungs via arteries, where oxygen levels are restored through the air once oxygenated, this blood is then carried throughout the body via arteries, keeping our organs and tissue alive. The cardiovascular system is the workhorse of the body, continuously moving to push blood to the cells. If this important system ceases its work, the body dies.
1a.To know how the heart adapts during exercise, an understanding of the cardiovascular system is needed. Main function of cardiovascular system is to maintain blood flow to every part of the body. It contains blood and vessels. The first vessel is arteries, and its function is to take blood to the body. The second blood vessel is capillaries. Capillaries transport blood to the heart, the heart then pumps blood around the body. The four chambers of the heart are what make it possible for the heart to pump blood around the body. The four chambers of the heart are the right atrium, left atrium, the right ventricle and left ventricle. During exercise, the body needs more oxygen to produce energy, this where the lungs begin to ventilate quicker than usual, oxygen is pumped around the body when it diffuses into the blood. When blood is moving around the body into the heart, the blood first enters the right atrium; here the blood is carried to the right ventricle. The right ventricle transports blood up to the lungs to increase oxygen level. This stage is known as the pulmonary circulation...
The heart is an extraordinary structure that is the base of all human life. However, it similar to the uncomplicated functions of water pumps. As the heart beats, blood is distributed throughout the body using a network of blood vessels. The functions of the heart can be kept in regular and healthy conditions through exercise. Exercise has an effect on the blood that is circulating through the body. That circulating blood makes the heart desire more oxygen, causing the heart rate to increase rapidly to keep up with activity demand.
Have you ever thought about how the strongest muscle in your body is about the size of your fist.The heart is divided up into four chambers, two of these chambers are ventricles and the other two are called atria. Their is one ventricle and one atria on the left side of the heart and one of each on the right side of the heart as well. Each chamber is separated by a valve. On the left side the valves are called mitral valve, aortic valve. The valves on the right side of the heart are called tricuspid valve and the pulmonic valve. The middle portion of the heart is called myocardium. The outer layer is known as the epicardium.
The heart, blood and blood vessels make up the cardiovascular system. The function of the cardiovascular system is to evenly distribute blood cells, water and nutrients. The cardiovascular system helps send blood to the body’s tissues. The heart is a muscle and the most important part of the cardiovascular system. Heart attacks, heart failure, and abnormal heart beat is a serious issue for the cardiovascular system these can sometimes lead to death. These diseases affect the heart and its functions (Heart and Cardiovascular disease 2005).
The heart serves as a powerful function in the human body through two main jobs. It pumps oxygen-rich blood throughout the body and “blood vessels called coronary arteries that carry oxygenated blood straight into the heart muscle” (Katzenstein and Pinã, 2). There are four chambers and valves inside the heart that “help regulate the flow of blood as it travels through the heart’s chambers and out to the lungs and body” (Katzenstein Pinã, 2). Within the heart there is the upper chamber known as the atrium (atria) and the lower chamber known as the ventricles. “The atrium receive blood from the lu...
The heart is a very important organ in the body. It’s around the size of someone’s hand closed up together in a fist and is located in the chest between the lungs. The main purpose of the heart is to pump blood around the body ( The Structure of the Heart). The heart consists of epicardium, myocardium, and endocardium layers that protect its walls. The epicardium is the membrane of the external heart surface. The endocardium lines the interior portion of the chambers in the heart. Lastly, between these two layers and the thickest, the myocardium is made of cardiac muscles and performs the work of the heart. Collagenous and elastic fibers between the hearts walls and chambers are called fibrous skeleton (Anatomy and Physiology pg.717- 718). It functions as a structural supporter and provides electrical insulation between the atria and ventricles. This is important for timing and coordination of electrical and contractile activity.
The heart is composed of three layers, which are the epicardium, myocardium and the endocardium. The epicardium is the outermost layer which is covered with flat mesothelial cells. The middle layer is called the myocardium which makes up the bulk. The myocardium is responsible for the pumping of the heart. The inner most layer is the endocardium which is directly in contact with the circulation of the blood. The endocardium is covered by endothelial cells and this layer lines the chambers. (Stevens)
These layers assist the blood through the heart to the body. The endocardium lines the valves and chambers. The myocardium is the muscle that causes contractions and creating actual blood pressure. The pericardium prevents expansion and protects the heart muscle.
The human heart has two ventricles and two atria making up four chambers. The heart includes the atria and ventricles. The left atrium and the left ventricle make up the left side of the heart and the right atrium and right ventricle make up the right side of the heart. Each side is important but the left ventricle and left atrium is the most important, and I will tell you why. The left ventricle receives blood from the left atrium and pumps into the aorta. The aorta pumps oxygenated blood to the rest of the body. If someone shot you in your left ventricle, you would most certainly die. That is why it is the most important. It pumps blood to the rest of your body. The right ventricle is important too. The right ventricle receives blood from the right atrium and pumps blood to the pulmonary artery. The pulmonary artery ha...
The circulatory system know as the cardiovascular system pumps blood around the body. It is made up of the heart, arteries, veins and capillaries. The heart pumps deoxygenated blood from the left side of the heart to the lungs to make you breath when exercising. When the Deoxygenated blood enters the lungs it turns into oxygenated blood then it goes to the heart and threw out all the body.
location of the heart is between the lungs in the center of the chest. The membrane that surrounds the heart is called the pericardium. The heart consists of four chambers. The left and right atria are known as the upper chambers. The lower chambers are referred to as the left and right ventricles. The septum is the wall of muscle that divides the left and right atria and left and right ventricles. The strongest chamber of the heart is the left ventricle.
The roles of the circulatory and respiratory system both carry important responsibilities and are essential in their jobs to the human body. The circulatory system is one, if not the, most important system in the human body. The circulatory system is made up of the heart, blood, and blood vessels. Within the blood vessels, there are three types: arteries, veins, and capillaries. The heart is an organ made up of cardiac muscle that has a role similar to a pump. When the muscles in the heart contract, it pumps fresh blood away from the heart, through a main artery called the aorta, and to the organs and cells of the body. Nutrients and oxygen then enter the cells through diffusion of the tissues. The respiratory system transports oxygen to the circulatory system. When transporting oxygen to the circulatory system, this will in turn transport oxygen to the rest of the cells in the body. Aside from transporting oxygen to the body, the respiratory system also plays a role in the removal of carbon dioxide and other contaminants in the body. These two systems effectively and efficiently work together in order to supply the body with oxygen and remove carbon dioxide and any other