RESPIRATORY ACTION OF THE INTERCOSTAL MUSCLES

将分析肋间肌的呼吸作用。 的 根据工程力学原理，肌肉力量 以及力产生的胸膜压力的变化。 的数据 描述狗胸骨旁区域的几何形状和运动 以增加现有的狗的几何形状和运动数据， 人体肋骨 肋间肌的方向分布和质量分布 在狗和人身上的表现将被测量。 从这些数据来看， 出现在力和胸膜压力之间的关系将被评估 并且肋间肌的潜在呼吸作用将是 计算了 力和胸膜压力之间的关系将是 在一个受控实验中，已知的力量将被证明， 施加到胸腔以模拟肋间肌的动作，以及 几何和机械非线性对理论的限制 将被确定。 呼吸系统的定量描述 将获得肋间肌肉的力学。

The respiratory action of the intercostal muscles will be analyzed. The principles of engineering mechanics yield the relation between muscle force and the change in pleural pressure that the force produces. Data that describe the geometry and motion of the parasternal region of the dog will be obtained to augment existing data on the geometry and motion of dog and human ribs. The distributions of intercostal muscle orientation and mass in dogs and humans will be measured. From these data, the factors that appear in the relation between force and pleural pressure will be evaluated and the potential respiratory action of the intercostal muscle will be calculated. The relation between force and pleural pressure will be demonstrated in a controlled experiment in which known forces will be applied to the rib cage to simulate the action of the intercostals, and limits of the theory imposed by geometrical and mechanical nonlinearities will be determined. A quantitative description of the respiratory mechanics of the intercostal muscles will be obtained.