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Respir/Excretory 1

All the vocabulary for Level 1 of the Respiratory and Excretory systems menu.

TermDefinition
breathing air moving in and out of the lungs
cellular respiration a process where oxygen (from breathing) is used to break down sugar (glucose) to make energy
pharynx the back of the throat
larynx also called the voicebox, this is where air passes after going through the pharynx
epiglottis a flap at the top of the trachea that prevents food from going down the trachea
trachea also called the windpipe, this is the tube made of c-shaped cartilage that carries air to your lungs
bronchi the two tubes that split off of the trachea and go to each lung
lungs the two sac-like organs in the chest where gas exchange occurs
alveoli tiny sac-like (think bunches of grapes!) structures in the lungs where gas exchange occurs
diaphragm the muscle beneath your lungs that contracts and relaxes to help move air in and out of your lungs
cellular waste substances that your cells no longer need, that may build up to toxic levels if they are not removed (includes carbon dioxide, water, salts, and many other substances)
kidneys two bean-shaped organs at waist level (along your back) that filter waste (urea) from the blood
ureters two tubes that carry liquid waste from the kidneys to the bladder
bladder an elastic muscular organs that holds urine until it leaves the body
urethra the tube that carries urine from the bladder to the outside of the body
urine waste water that carries cellular wastes from the body
filter to remove unwanted materials from something
excretion the removal of cellular waste
liver an organ that aids in digestion and excretion
skin the largest organ in the body, excretes water and wastes through sweat
oxygen a respiratory gas needed by cells to make energy
carbon dioxide a waste gas from cells that needs to be removed from the body
Created by: OMSscience8
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