circulatory system Flashcards
what is the Cardiovascular System?
consists of the heart, blood vessels and blood. It is responsible for delivering blood to different parts of the body
what do the valves do?
they keep the blood flowing in one direction. the heart and veins have these.
what does the Right Ventricle do?
receives deoxygenated blood from the right atrium and pumps it to the pulmonary artery
what does the Left Ventricle do?
receives oxygenated blood from the left atrium and pumps it to the aorta
what does the Left Atrium do?
receives oxygenated blood from the lungs and pumps it to the left ventricle
what does the Right Atrium do?
receives deoxygenated blood from the vena cava and pumps it to the right ventricle
what does Deoxygenated mean?
contains no oxygen
what does the Aorta do?
receives oxygenated blood from the left ventricle and pumps it to the body
what does the Aorta do?
receives oxygenated blood from the left ventricle and pumps it to the body
Vena Cava
receives deoxygenated blood from the body and carries to the right atrium
Vein
carry blood to the heart and usually deoxygenated. Thinner walls, large opening and contains valves to prevent back flow of blood
Artery
carry blood away from the heart and usually oxygenated. Thick and muscular walls to withstand high pressure and small opening
Capillary
allows diffusion of gases and nutrients from blood into the body cells. Very thin and one cell thick. Small hole and walls are semi-permeable
Pulmonary Artery
carries deoxygenated blood away from the right ventricle to the lungs
Pulmonary Vein
returns oxygenated blood from the lungs to the heart
