Chapter 5 RESPIRAION Introduction o Containing: inspiration expiration o Functions: Obtain o from external environment Remove co form the body o Respiratory processes: Pulmonary ventilation Gas exchange in the lung Gas transport in the blood Gas exchange in the tissue
Chapter 5 RESPIRATION Introduction • Containing: inspiration & expiration • Functions: Obtain O2 from external environment Remove CO2 form the body • Respiratory processes: Pulmonary ventilation Gas exchange in the lung Gas transport in the blood Gas exchange in the tissue
血液循环 组织、 肺 细胞 肺通气肺换气气体在血液组织细胞内氧 中的运输换气化代谢 Respirator 外呼吸 内呼吸 processes
Respiratory processes
8 1. Pulmonary ventilation ● Definition o Principles of pulmonary ventilation 米 Driving force Direct pressure changes in alveoli Source contraction of respiratory muscles Inspiratory muscles Diaphragm, External intercostal muscle Expiratory muscles: Diaphragm, Ext-& Internal intercostals Accessory respiratory muscles
§ 1. Pulmonary ventilation • Definition • Principles of pulmonary ventilation * Driving force Direct ~: pressure changes in alveoli Source ~: contraction of respiratory muscles Inspiratory muscles: Diaphragm, External intercostal muscle Expiratory muscles: Diaphragm, Ext- & Internal intercostals Accessory respiratory muscles
吸 呼气时 平静吸气时 深吸气时 Respiratory movement
Respiratory movement
ypes 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\(n<() 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()<(>) atmospheric pressure→Air flows into (out of) the alveoli