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Circulatory Sys. Voc

Circulatory System Voc.

QuestionAnswer
artery blood vessel that carries blood away from the heart
vein blood vessel that carries blood back to the heart
capillary smallest blood vessel found between arteries and veins
atrium one of two upper chambers of the heart
aorta main artery of the blood
plasma yellowish fluid that makes up more than 50% the volume of blood; it contains nutrients, hormones, and mineral and is about 90% water
red blood cell carries oxygen throughout the circulatory system
white blood cell these cells are the body's main defense against germs and bacteria
platelets blood cells which help with blood clotting
coronary circulation the heart needs a constant and fresh supply of blood which is delivered by the coronary circulation system
hemoglobin a substance that attracts and holds oxygen molecules; hemoglobin is in the red blood cells
bone marrow inside certain long bones
fibrin long thread-like mesh that helps clot the blood
clot seals a wound by forming thickened concentration of blood
pacemaker an area of the heart that regulates or signals the beating of the heart
cardiac muscle the heart
one-way valve a valve that allows the flow of blood in only one direction
pulmonary arteries arteries that carry carbon dioxide rich blood from the heart to the lungs
pulmonary veins veins which carry the oxygen-rich blood from the lungs back to the heart
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