论文部分内容阅读
呼吸是指机体与外界环境之间的气体交换过程。它包括肺通气,气体在血液中的运输和组织换气三个过程。(一)肺通气肺通气是指肺与外界环境之间的气体交换过程。1.肺通气的动力呼吸运动是肺通气的动力,包括吸气运动和呼气运动。(1)呼吸运动引起吸气运动的是膈肌和肋间外肌。膈肌收缩时,增大胸腔上下径,肋间外肌收
Breathing refers to the gas exchange process between the body and the external environment. It includes lung ventilation, gas transport in the blood and tissue ventilation three processes. (A) lung ventilation pulmonary ventilation refers to the process of gas exchange between the lungs and the external environment. 1. Pulmonary Ventilation Breathing is the driving force of pulmonary ventilation, including inspiratory and expiratory exercise. (1) Respiratory movement caused by inspiratory exercise is the diaphragm and intercostal muscles. Diaphragm contraction, increased thoracic diameter, intercostal muscle closed