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Circulatory System

Blood and Circulation Vocab

TermDefinition
heart organ made of cardiac muscle tissue, located behind the sternum and between the lungs
atrium upper chambers of the heart--right atrium and left atrium
ventricle lower chambers of the heart--right ventricle and left ventricle
coronary circulation the flow of blood to and from the tissues of the heart
pulmonary circulation the flow of blood through the heart, to the lungs, and back to the heart
systemic circulation the movement of oxygen-rich blood to all of your organs and body tissues (except the heart and lungs)
artery blood vessels that carry blood away from the heart
vein blood vessels that carry blood back to the heart
capillary microscopic blood vessels that connect arteries and veins
blood pressure the pressure your blood puts on artery walls
cardiovascular disease any disease that affects the heart, blood vessels, and blood; include atherosclerosis, hypertension, and heart failure
atherosclerosis one type of cardiovascular disease where fatty deposits of cholesterol build up on arterial walls
hypertension when blood pressure is consistently higher than normal (aka high blood pressure); causes extra strain on the heart when it pumps blood
plasma liquid part of blood; made mostly of water
hemoglobin molecule that carries oxygen and carbon dioxide; makes up red blood cells
platelet irregularly shaped cell fragments that help clot blood
white blood cells fight bacteria, viruses, and other invaders of your body
red blood cells special cells with no nucleus that carry oxygen and carbon dioxide to and from cells; made of hemoglobin
lymph excess tissue fluid that diffuses into lymphatic capillaries
lymphatic system carries lymph through a network of lymph capillaries and vessels, and drains it into large veins near the heart' helps fight infections and diseases
lymphocyte a type of white blood cell that fights infection
lymph node bean-shaped organs found throughout the body that filter out microorganisms and foreign materials taken up by the lymphocytes
Created by: MsHollinger