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.
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.
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
trachea
narrow tube from the mouth to the lungs through which air moves.
lungs
the organ for breathing air.
bronchi
the narrow tubes through which air passes from the trachea to the smaller bronchioles and alveoli.
bronchioles
small branching tubes in the lungs leading from the two larger bronchi to the alveoli.
alveoli
tiny air sacs in the lungs at the ends of the narrowest tubes.
diaphragm
flexible, dome-shaped, muscular layer separating the chest and the abdomen. It is involved in breathing.
vital capacity
the largest volume of air that can be breathed in or out at one time.
Breathing
movement of muscles in the chest causing air to enter the lungs and the altered air in the lungs to leave.
