Essay On Cardiovascular System

The cardiovascular system
The cardiovascular system is a system that is able to transport things such as nutrients through the body in order for them to reach their destinations. The cardiovascular system is made up of our hearts, our blood vessels, arteries, veins and capillaries and our blood. The system is also linked to the respiratory system.
The heart
The heart is the size of a closed fist, this can be located in the thoracic cavity. The thoracic cavity is a chamber of the body that is between the lungs and is safe, this is because the rib cage ensures the safety of the thoracic cavity. It also has a tough membrane that surrounds the pericardium which is the membrane which allows the closing of the heart. This also contains a thin line
The deoxygenated blood is then able to enter the right side of the heart via the vena cava. The blood is then able to be collected in the right atrium and flows through the tricuspid valve, this then goes into the right ventricle. The blood is then able to exit the heart through the pulmonary artery, this then transports the blood to the lungs so that the blood can be oxygenated.
The pulmonary valve
The pulmonic valve is located in the right ventricle of the heart. The pulmonic valve is then opened by the blood as it increases the ventricular systole which is then able to contract the ventricles therefore helping it to force blood into the aorta and the pulmonary artery. It will then close when the pressure decreases inside the heart.
The aortic valve
The aortic valve is located between the aorta and the left ventricle of the heart. The pulmonary vein is able to make sure that the oxygenated blood is able to get to the correct location which would be to the heart’s left atrium. It will then pass through the mitral valve, making sure that it goes into the left ventricle. When the heart contracts the oxygenated blood will then be able to make its journey out of the left ventricle through the aortic