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Science 12
Circulatory System
Question | Answer |
---|---|
3 main types of blood vessels | arteries, veins, and capillaries |
aorta | the largest artery in the body |
arteries | blood vessels that carry blood from the heart to all parts of the body |
atrium | the top chamber on either side of the heart |
blood | -helps keep the body's temperature at 98.6 F |
blood donors | people who give their blood to be used by others |
blood flows in how many directions | one direction |
Blood is pumped to the lungs from which side of the heart | right side |
blood transfusion | transfer of blood from one person to another person |
Blood types | -A, B, AB, O -Only O can be successfully mixed with other blood types |
body organs that work with the circulatory to remove waste products | skin, lungs, and kidneys |
capillaries | the smallest blood vessels connecting the arteries and veins |
carbon dioxide | gas that passes into the capillaries and is carried away by the blood |
circulatory system | consists of heart, blood vessels, and blood |
coronary arteries and coronary veins | provide blood for the heart |
heart | the hollow muscular organ that has walls made of strong muscle |
heart rate | the number of times your heart beats in one minute |
heart-related health problems | -can be inherited -can be the result of bad habits and choices |
kidneys | -main job is to clean the blood by removing wastes and excess water -most people have two |
lungs | -removes wastes during respiration |
oxygen | gas that passes from the capillaries into the surrounding cells |
pacemaker | A group of cells that sends electric currents to the heart and makes sure the heart beats at a steady pace. |
plasma | the liquid part of the blood that dissolves proteins, sugars, and nutrients |
platelets | small fragments of cells that help form blood clots |
pulmonary artery | carries blood from the lungs back to the heart |
pulse | the push of blood through your blood vessels each time your heart beats |
red blood cell | -the part of the blood that carries oxygen to all parts of the body -have a concave shape and is able to squeeze through capillaries |
skin | helps remove some wastes through perspiration |
staying healthy includes | eating right, exercising, not smoking |
valve | a small flap of tissue that prevents blood from flowing backward |
veins | the blood vessels that carry blood from the body back to the heart |
venae cavae | the largest vein in the body |
ventricle | the lower chamber on either side of the heart |
wastes | the body can be poisoned or die if these in the circulatory system are not removed |
white blood cells | the part of the blood that helps the body fight diseases and infections |
William Harvey | the first to understand how blood circulates throughout the body |