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Kennedy KP Cardio.
Circulatory System
Term | Definition |
---|---|
cardiovascular system | a collection of organs that work together to transport materials to and from the cells of the body |
parts of cardiovascular system | heart, blood, blood vessels |
parts of blood | plasma, RBC's, WBC's, platelets |
plasma | fluid portion of the blood |
red blood cells (RBC) | most abundant cell in blood, carries oxygen using hemoglobin |
white blood cells | destroy pathogens (bacteria, virus) |
platelets | fragments of cells that create blood clots |
heart | muscular organ that pumps blood throughout the body |
parts of the heart | right atrium, right ventricle, left atrium, left ventricle |
right atrium | gets oxygen poor blood from the body |
right ventricle | sends oxygen poor blood to the lungs to get oxygen |
left atrium | gets oxygen rich blood from the lungs |
left ventricle | sends oxygen rich blood to the rest of the body & picks up carbon dioxide |
blood vessels | tubes that transport blood |
artery | blood vessel that carries blood away from heart |
vein | blood vessel that carries blood in to the heart |
capillary | smallest blood vessel, joins arteries and veins; gas exchange occurs here |
pulmonary circulation | circulation of blood between the heart and lungs |
systemic circulation | circulation of blood between the heart and the rest of the body |
blood pressure | the force exerted by blood on the inside walls of a blood vessel |
exercise | your cells need more oxygen so the heart beats faster |
blood types | A, B, AB, O |
blood type AB | universal recipient |
blood type O | universal donor |
atherosclerosis | fatty material builds up on the inside of blood vessels; can lead to heart attack |
high blood pressure | caused by atherosclerosis; overworks heart and blood vessels |