structure that keeps the trachea from collapsing

• false vocal cords
• true vocal cords
• cartilaginous rings
• chemoreceptors

tool to measure respiratory air volume

• atmospheric pressure
• spirometer
• sphygmomanometer
• breathalizer

lining that warms,  moistens, and filters air

• cilia
• cartilaginous rings
• false vocal cords
• mucous membrane

causes air to move in and out of lungs

• cilia
• atmospheric pressure
• spirometer
• carbon monoxide

help close airway during speech, do not function in speech

• cilia
• glottis
• epiglottis
• false vocal cords

detects alcohol on the breath

• spirometer
• breathalyzer
• EEG

tiny hairs that push particles trapped in mucus to the pharynx

• flagella
• cilia
• pili

gas that displaces oxygen to combine with hemoglobin leading to death

• carbon dioxide
• helium
• nitrous oxide
• carbon monoxide

muscle tissue and elastic fibers that make noise as air is forced between them

• false vocal cords
• cilia
• cartilaginous rings
• true vocal cords

detect the amount of oxygen in our blood

• cilia
• spirometer
• chemoreceptors
• breathalizer