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8U4C4

Circulatory and respiratory system

TermDefinition
respiratory system A collection of organs whose primary function is to take in oxygen and expel carbon dioxide.
Respiration The exchange of oxygen and carbon dioxide between living cells and their environment; includes breathing and cellular respiration.
cellular respiration a chemical reaction where sugar is oxidized to make energy plus CO2 and H2O
Diaphragm Large, flat muscle at the bottom of the chest cavity that helps with breathing
Pharynx The passage from the mouth to the larynx and esophagus
Epiglottis A flap of tissue that seals off the windpipe and prevents food from entering.
larynx the area of the throat that contains the vocal cords and produces vocal sounds
trachea the tube that connects the larynx to the lungs
Cilia thin hairs that line the body's cavities
Bronchi two tubes that connect the lungs with the trachea
Bronchioles smallest branches of the bronchi that connect to the alveoli
alveoli Any of the tiny air sacs of the lungs where oxygen and carbon dioxide are exchanged
circulatory system a collection of organs that transport blood throughout the body
artery A blood vessel that carries blood away from the heart to the body's organs
capillary A tiny blood vessel that allows an exchange between blood and cells in other tissue
vein A vessel that carries blood to the heart
A left atrium, a right atrium, a left ventricle, and a right ventricle What are the 4 chambers of the heart?
Plasma, red blood cells, white blood cells, and platelets What are the 4 main components of blood?
false True or false- Human blood is blue.
Created by: Ms. Greenup
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