Respiratory System Flashcards
oxygen
a gas in the air (and water) that animals need to breathe in; made up of particles with two oxygen atoms. Plants produce oxygen as part of photosynthesis.
cellular respiration
the chemical reaction involving oxygen that moves the energy in glucose into the compound ATP. The body is able to use the energy contained in ATP.
glucose
a simple carbohydrate and the simplest form of sugar
carbon dioxide
a gas in the air produced by respiration and used by plants as part of photosynthesis. The burning of fossil fuels releases carbon dioxide.
respiratory system
the body system involving the lungs and associated structures, which take in air and supply the blood with oxygen to deliver to the body’s cells so they can carry out their essential functions; it also performs gas exchange to remove the waste gas carbon dioxide
trachea
narrow tube from the mouth to the lungs through which air moves
lungs
the organ for breathing air. Gas exchange occurs in the lungs.
pulmonary vein
the vessel through which oxygenated blood travels from your lungs to the heart
aorta
a large artery through which oxygenated blood is pumped at high pressure from the left ventricle of the heart to the body
arterioles
vessels that transport oxygenated blood from the arteries to the capillaries
venules
small veins
pulmonary artery
the vessel through which deoxygenated blood, carrying wastes from respiration, travels from the heart to the lungs
