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What is 1 + 3?
The throat (shared with the digestive system)
Windpipe; passage though which air moves in the respiratory system.
The passageways that branch from the trachea and direct air into the lungs.
The main organs of the respiratory system.
A large, dome-shaped muscle that plays an important role in breathing.
Tiny sacs of lung tissue where gas exchange occurs.
The voice box; located in the top part of the trachea, underneath the epiglottis.
Folds of connective tissue that stretch across the opening of the larynx and produce a person's voice.
Tiny hair-like extensions of cells that can move together like whips.
The process in which oxygen and glucose undergo a complex series of chemical reactions inside cells.