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cardiovascular system The body system that consist of the heart, blood vessels, and blood; also called the circulatory system.
Coronary artery An artery that supplies blood to the heart itself.
Vein A blood vessel that carries blood back to the heart.
Blood pressure The pressure that is exerted by the blood against the walls of the blood vessels
red blood cells A cell in the blood that takes up oxygen in the lungs a and delivers it to cells elsewhere in the body.
Hearts a hollow, muscular organ that pumps blood throughout the body.
Pacemaker A group of cells located in right atrium that sends out signals that make the heart muscle contract and that regulates heart rate.
Aorta The largest artery in the body; receives blood from the left ventricle.
Diffusion The process by which molecules move from an area of higher concentration to an area of lower concentration.
White blood cells A blood cell that fights disease.
Atrium Each of the two upper chambers of the heart that receives blood that comes into the heart.
Artery A blood vessel that carries blood away from the heart.
valve A flap of tissue in the heart or a vein that prevents blood from flowing backward.
Plasma The liquid part of blood.
Ventricle Each of the two lower chambers of the heart that pumps blood out of the heart.
Capillary A tiny blood vessel where substances are exchanged between the blood and the body cells.
Pulse The alternating expansion and Relaxation of an artery wall as blood travels through an artery.
Platelets A cell fragment that plays an important part in forming blood clots.
Created by: Hobbsb1