Animal not aware of breathing 4. Trachypnea- excessively rapid breathing 7. Tidal volume- volume of air breathed in or out during a respiratory cycle 2. Inspiratory reserve- volume of air that could still be breathed in after tidal inspiration 3. The sum totals of pressures of all gases in a given area is termed total pressure a.
Partial pressure is the pressure exerted by a single gas in the same area in living tissue a.
Partial pressure is designated by the letter P, so PO2 would be the partial pressure of oxygen in a given area 4. Dead space ventilation a. Ventilation of major branches of trachea b. Ventilation of nonfunctional alveoli 3. Important in humidifying air 5. Pneumotaxic center a. Regulates the termination of inspiration and facilitate expiration 2.