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Chapter 16
Respiratory System
15
Science
Not Applicable
11/29/2011

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Term
External Respiration
Definition
Gas exchange between blood and air
Term
Internal Respiration
Definition
Gas exchange between blood and cells
Term
Cellular Respiration
Definition
Oxygen utilization and CO2 production at cellular level.
Term
Acclimatization
Definition
Respiratory adjustments to altitude. Higher altitude, faster breathing and more red blood cells. Lower altitude, slower breathing and less red blood cells.
Term
Surfactant
Definition
Reduce surface tension preventing collapse of alveoli
Term
Residual Volume (RV)
Definition
1200ml, air left in the lungs after strenuous expiration
Term
Vital Capacity (VC)
Definition
Total amount of exchangeable air (TV+IRV+ERV)
Term
Total Lung Capacity (TLC)
Definition
6000ml, sum of all lung volumes
Term
Inspiration
Definition
Diaphragm contracts. Volume increases and pressure decreases below atmospheric pressure.
Term
Expiration
Definition
Diaphragm relaxes. Volume decreases and pressure increases above atmospheric pressure.
Term
Nose
Definition
Airway, moistens, warms, filters and cleans air.
Term
Larynx
Definition
Attached to hyoid bone. Airway, rout air and food to proper channels, voice production.
Term
Trachea
Definition
Airway, mucous lining filters particles, goes from larynx to mediastinum. Flexible.
Term
Bronchial Tree
Definition
Primary bronchi subdivide into secondary, each supplying a lobe of the lungs
Term
Lungs
Definition
Left one, 2 lobes separate by oblique fissure. Right one, 3 lobes by oblique and horizontal fissures.
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