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RESPIRATORY SYSTEM

Across
One of the tubules forming the respiratory system
The cavity behind the nose and above the roof of the mouth that filters air and moves mucous and inhaled contaminants outward
Spongy organs located in the thoracic cavity enclosed by the diaphragm and ribcage
Metabolic processes whereby certain organisms obtain energy from organic molecules
Protective secretion of the mucous membranes
Tiny sacs of lung tissue specialized for the movement of gases between air and blood
Down
Progressively smaller tubular branches of the airways
Passing, or able to pass, air in and out of the lungs normally
Voice box; passageway for air moving from pharynx to trachea
The passages that branch from the trachea and direct air into the lungs