Upper respiratory tract
The part of the respiratory system containing the nasal cavity, paranasal sinus, and pharynx
Lower respiratory tract
The part of the respiratory system containing the larynx, trachea, bronchi, and lungs
Ventilation
The process of getting air into the lungs and back out
External respiration
The process of oxygen and carbon dioxide exchange between the alveoli and the blood
Internal respiration
The process of o2 and co2 exchange between the cells and the blood
Compliance
The ease with which the lungs inflate
Aspirate
To take in by means of suction
Total lung capacity
The maximum volume of air contained in the lungs after a forceful aspiration