| Front | Mechanism of respiration: quiet exhalation |
|---|---|
| Back | Mechanism: primarily involves passive, inwards movements of the thoracic walls to decrease the volume of the thoracic cavity (lung deflates) Causes: 1. Elastic recoil of lungs (bronchial tree stretched during inspiration) 2. Elastic recoil of costal cartilages returning to normal shape |
Tags: lung
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