1. Spirometer used to measure lung capacity.
2. Breathing movement is traced in a form of graph = kymograph.
3. Total capacity in human lungs = + 5 dm3 of air.
4. Tidal volume - air exchanged in normal breath = + 0.5 dm3 .
5. Healthy person breaths + 15 to 20 times per minute.
6 Vital capacity - max volume of air exchanged during forced breathing = raised to 3.5 dm3.
7. Vital capacity - has two components:
7. Vital capacity - has two components:
=> inspiratory capacity
=> expiratory capacity
8. Residual volume - volume of air that remains in the lungs = + 1.5 dm3.
9. Total lungs capacity = 5.0 dm3.
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