Types of respiration >Eupnea Forced breathing (Deep breathing) >Abdominal Thoracic breathing Principles of pulmonary ventilation >Contraction (Relaxation)of inspiratory muscles->Expansion (Reduction)of thoracic cavity--→(？)Distension(Recoil）训of alveoli--→ Intrapulmonary pressure(T)<(>)atmo- spheric pressure->Air flows into (out of)the alveoli Types of respiration ➢Eupnea & Forced breathing (Deep breathing) ➢Abdominal & Thoracic breathing Principles of pulmonary ventilation ➢Contraction (Relaxation) of inspiratory muscles→Expansion (Reduction) of thoracic cavity→(?)Distension (Recoil) of alveoli→ Intrapulmonary pressure()<(>) atmo￾spheric pressure→Air flows into (out of) the alveoli