RESPIRATORY ACTION OF THE INTERCOSTAL MUSCLES

将分析肋间肌肉的呼吸动作。这个 工程力学原理给出了肌肉力量之间的关系 以及外力产生的胸膜压力的变化。数据 描述狗的胸骨旁区域的几何和运动 以增强关于狗的几何和运动的现有数据和 人体肋骨。肋间肌位向和质量的分布 在狗和人身上都会被测量。从这些数据来看， 出现在用力和胸膜压力之间的关系会得到评估 肋间肌肉的潜在呼吸作用将是 计算出来的。力和胸膜压力之间的关系将是 在一项对照实验中演示，在该实验中，已知力将 应用于肋骨笼以模拟肋间的动作，以及 几何和力学非线性对理论的限制 将会被确定。呼吸系统的定量描述 将获得肋间肌肉的力学性能。

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.