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one of the many tiny thin walled pockets in the lungs through which oxygen moves into the blood and carbon dioxide is removed
air sac
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the process in which the body takes in fresh air containing oxygen and forced out used air, containing carbon dioxide
breathing
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the number of times a person inhales in one minute
breathing rate
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one of the two tubes into which the windpipe branches, one tube goes to each lung
bronchial tube
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a tough flexible body material
cartilage
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the basic unit that makes up all living things
cell
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a large dome-shaped muscle separating the chest from the stomach area
diaphram
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-
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One of a pair of spongy, bag-like organs of the body that expand when filled with air
lungs
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the process in which cells use oxygen to release energy and give off carbon dioxide
respiration
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the system by which oxygen is taken into the body and carbon dioxide is removed
respiratory system
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the air passage that connects the throat to the lungs
windpipe
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a thick-walled blood vessel that carries blood away from the heart
artery
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either of the two upper chambers of the heart
atrium
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a tissue made up of a liquid called plasma and several types of cells
blood
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a tiny thin-walled blood vessel that connects an artery and a vein
capillary
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the movement if blood to the heart through the network of blood vessels throughout the body and back to the heart
circulation
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the heart and the network of blood vessels which work together to carry blood throughout the body
circulatory system
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the body system that gets rid of harmful wastes produced by the cells
excretory system
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the muscular organ that pumps blood through the blood vessels of the body
heart
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one of a pair of organs that clean and filter blood
kidney
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the number of times the heart beats in one minute; it is felt as a throbbing caused by blood rushing into the arteries each time the ventricles contract
pulse
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the vessels that carry blood into the heart
veins
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either of the two lower chambers of the heart
ventricle
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a substance produced in the blood that destroys or weakens germs, helping the body fight diseases
antibody
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certain one-celled organism that can be seen only with a microscope
bacteria
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a change or condition in the body having a particular cause and signs that keeps the blood from working normally
disease
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a chemical that affects or changes the way of the body or mind works
drug
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a tiny organism that causes disease and can be seen only with a microscope
germ
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a dangerous drug that is unlawful for people to have or to use
illegal drug
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the body system that defends against germs by attacking and destroying germs as they enter the body
immune system
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the smoke given off by another person's burning tabacco
secondhand smoke
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a colorless, odorless gas
carbon dioxide
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the colorless, ordoless, tasteless gas that makes up about 1/5 of the air
oxygen
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