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26 Cards in this Set
- Front
- Back
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nose |
warms and filters air as it enters the body |
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larynx |
voice box, contains vocal cords |
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vocal cords |
2 bands of tissue inside the larynx that vibrate to make noise as you exhale |
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epiglottis |
cartilage flap that covers that trachea & larynx when you swallow food or liquid to prevent food and liquids from getting into the lungs. |
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trachea |
cartilage tube that carries air to the bronchi |
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bronchi |
2 tubes branching off of the trachea that take air into the lungs |
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bronchioles |
smaller tubes that carry air inside the lungs |
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alveoli |
grape like air sac clusters surrounded by capillaries in the lungs; site of gas exchange between air and blood (oxygen goes into the blood and carbon dioxide leaves the blood). |
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diffusion |
oxygen that moves from an area where there is more oxygen to where there is less oxygen. |
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diaphragm |
a dome shaped muscle beneath the lungs |
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inhale |
oxygen goes into the lungs; caused by the diaphragm lowering |
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exhale |
carbon dioxide and water leave your lungs; caused by the diaphragm rising |
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plaque |
a deposit of fatty or fibrous material in a blood vessel wall |
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homeostasis |
a natural balance |
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cholesterol |
a waxy substance that occurs naturally in all parts of the body and is nessasary for the body to function normally, but too much can clog blood vessels |
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independent variable |
chosen by the experimenter and is changed on purpose |
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dependent variable |
changes in response to the IV, also known as results |
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capillaries |
tiny microscopic blood vessels that connect veins and arteries together; site of gas, nutrient and waste exchange |
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veins |
connect to capillaries and return oxyen-poor blood to the right atrium of the heart; have valves that prevent blood from flowing backwards |
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red blood cells |
biconcave cells made in your bone marrow (spongy substance inside your bones); most numerous cells in your body, carry oxygen |
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white blood cells |
made in the bone marrow and lymph glands, kill germs and fight infection |
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plasma |
the liquid portion of the blood |
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platelets |
small, irregularly shaped bodies that have a sticky coating; join together to stop bleeding
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arteries |
carries blood away from the heart ; thick, strong, elastic-walled tubes; made of smooth muscle tissue. |
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constants |
factors that stay the same throughout the experiment |
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heart |
muscular organ that pumps blood |
