A practical treatise on medical diagnosis : for students and physicians . Transverse section of healthy adult chest upon level of sterno-xiphoid = 89 centimetres. (Dr. Gee.) and the transverse diameters and by the shape of the transverse sectionof the chest. The latter is an ellipse, and has been described as reniform DISEASES OF THE LUNGS AND PLEURJ1. 231 (see Fig. 33). The antero-posterior diameter is about one-third lessthan the transverse. Measurement with the cyrtometer (see Mensura-tion) verifies the result of inspection with mathematical precision. Inchildren
A practical treatise on medical diagnosis : for students and physicians . Transverse section of healthy adult chest upon level of sterno-xiphoid = 89 centimetres. (Dr. Gee.) and the transverse diameters and by the shape of the transverse sectionof the chest. The latter is an ellipse, and has been described as reniform DISEASES OF THE LUNGS AND PLEURJ1. 231 (see Fig. 33). The antero-posterior diameter is about one-third lessthan the transverse. Measurement with the cyrtometer (see Mensura-tion) verifies the result of inspection with mathematical precision. Inchildren a transverse section is different. It is more circular, and theantero-posterior and transverse diameters are almost equal. (See ) Marked deviations from such section, or in the relations of thediameters, are seen in abnormal types of chest. Fig. Transverse section of an infants chest, aged nine months. A circle within shows the similarity. It is difficult to describe the shape of the chest in health. Byrepeated practice we readily form a judgment of the true shape. Norule has been applied to the relationship of the length of the chest tothe length of the body, but it would seem that the circumference of thechest bears such relationship (see Mensuration). In health the chestshould be symmetrical, the right side probably a little larger than theleft. In the ideal chest the muscles of respiration should be well de-veloped and a moderate amount of subcutaneous fat found. The ster-num should project forward from above downward, and the portionjoining the manubrium and the xiphoid cartilage should be a littlemore prominent than the other part. It is not unusual to see a clearlymarked distinction between the upper and middle portions of thesternum, or an undue projection of one or more of the upper ribs,and some striking changes abo
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