Explain The Structure And Functions Of The Cardiovascular System
P5 – Describe the Structure and Function of the Cardiovascular System
Changes in Stroke Volume
Stroke volume is the amount of blood pumped out the left ventricle, every beat your heart makes. It can differ from your resting heart beat and your heart beat when exercising. Normally, when exercising, your heart rate increases meaning the stroke volume also increases. The blood pumped by the left ventricle is oxygenated, and will deliver oxygen to the muscle. The more blood injected in a heartbeat means the athlete will be able to do more. Aerobic training can increase the effectiveness of the left ventricle. They will become thicker and stronger so they will be able to pump out more blood.
Cardiac Output
A trained athlete would have a higher cardiac out than an untrained athlete. This is because a trained athlete has a higher stroke volume than an untrained one. This is because the trained person’s body has adjusted …show more content…
Heart
The heart is the organ that responsible for pumping your blood around the body. It is located in the middle of the chest. About two thirds of the heart is located in the left side of the body, and the other third on the right side of the body. The heart consist of four chambers. The right side contains deoxygenated blood that goes to the lungs to become oxygenated. The oxygenated blood then goes to the left ventricle to get pumped to the muscles so they can transport the oxygen to them.
Valves
The four main valves in the heart are: The two atrioventricular (AV) valves, the mitral valve, and the tricuspid valve, which are between the upper atria and the lower ventricles. The two semilunar valves, the aortic valve and the pulmonary valve, which are in the arteries leaving the heart. The valves allow the blood to flow in only one direction. They open and close depending on the blood
Changes in Stroke Volume
Stroke volume is the amount of blood pumped out the left ventricle, every beat your heart makes. It can differ from your resting heart beat and your heart beat when exercising. Normally, when exercising, your heart rate increases meaning the stroke volume also increases. The blood pumped by the left ventricle is oxygenated, and will deliver oxygen to the muscle. The more blood injected in a heartbeat means the athlete will be able to do more. Aerobic training can increase the effectiveness of the left ventricle. They will become thicker and stronger so they will be able to pump out more blood.
Cardiac Output
A trained athlete would have a higher cardiac out than an untrained athlete. This is because a trained athlete has a higher stroke volume than an untrained one. This is because the trained person’s body has adjusted …show more content…
Heart
The heart is the organ that responsible for pumping your blood around the body. It is located in the middle of the chest. About two thirds of the heart is located in the left side of the body, and the other third on the right side of the body. The heart consist of four chambers. The right side contains deoxygenated blood that goes to the lungs to become oxygenated. The oxygenated blood then goes to the left ventricle to get pumped to the muscles so they can transport the oxygen to them.
Valves
The four main valves in the heart are: The two atrioventricular (AV) valves, the mitral valve, and the tricuspid valve, which are between the upper atria and the lower ventricles. The two semilunar valves, the aortic valve and the pulmonary valve, which are in the arteries leaving the heart. The valves allow the blood to flow in only one direction. They open and close depending on the blood