Physiology and biochemistry in modern medicine . Fig. 116.—Diagram to show the effect of high and low positions of the diaphragm on thecostal angle. Line 1. Normal position of diaphragm Costal margins move out during inspiration. Line 2. High position of diaphragm. Normal, outward movement of costal margins accentuated. Line 3. Low position of diaphragm. Costal margins move in during inspiration. Line 4. Very low position of diaphragm. Costal margins move out during inspiration. Line S. Actual line of traction of diaphragm. (From T. Wingate Todd.) THE Ml < ll wms OF i;i SPIR \Tlo\ 323. Fig.
Physiology and biochemistry in modern medicine . Fig. 116.—Diagram to show the effect of high and low positions of the diaphragm on thecostal angle. Line 1. Normal position of diaphragm Costal margins move out during inspiration. Line 2. High position of diaphragm. Normal, outward movement of costal margins accentuated. Line 3. Low position of diaphragm. Costal margins move in during inspiration. Line 4. Very low position of diaphragm. Costal margins move out during inspiration. Line S. Actual line of traction of diaphragm. (From T. Wingate Todd.) THE Ml < ll wms OF i;i SPIR \Tlo\ 323. Fig. 117.—Diagram to show the effect of clinical displacements of the diaphragm on the costalangle. Line 1. Normal position of diaphragm. Costal margains move out during inspiration. 2. Position of diaphragm in general cardiac enlargement. Costal margin from ensiform to ninthrib moves toward median line. 3. Position of diaphragm in left-sided cardiac enlargement. Left costal margin is fixed ormoves in during inspiration. 4. Position of diaphragm in right-sided cardiac enlargement. Right costal margin is fixed ormoves in during inspiration. 5. Costal margin. (From T. Wingate Todd.) :!l4 the respiration tenia] intercostals have the mastery and cause the eostal borders tospread. When the arch of the diaphragm is depressed, as in pleurisywith effusion, emphysema, and empyema, the line of traction and theline of the muscular fibers of the diaphragm correspond more closely,so that the diaphragm is able to use its full force against the intercostalmuscles, with the result that the costal b
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