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Circulatory system

QuestionAnswer
atrium two upper chambers of the heart that contract at the same time during a heart beat.
ventricle two lower chambers to the heart, that contract at the same time,during a heart beat.
coronary circulation flow of blood to and from the tissues of the heart.
pulmonary circulation flow of of blood to the heart to the lungs and back through the heart.
systemic ciculation large part of the circulatory system,in which oxygen-rich blood flows to all the organs and body tissue, except the heart and lungs, and oxygen-poor blood returns to the heart.
artery blood vessel that carries blood away from the heart, and has thick,elastic walls made of connective tissue and smooth muscle tissue.
vein blood vessel that carries blood back to the heart, and has one-way valves that keep blood moving toward the heart.
capillary microscopic blood vessel that connects arteries to veins; has walls one-cell thick,though which nutrients and oxygen diffuse into body cells, and waste materials and carbon dioxide diffuse out of body cells.
Created by: sophia_mitchell
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