Book One -- The things that sustain and support the entire body, and what braces and attaches them all. [the bones and the ligaments that interconnect them] | Chapter 19 On the Bones of the Thorax

What Nature paid special attention to in constructing the thorax

Since neither respiration nor speech can occur without the thorax, and since the heart first and the lung as well need to be protected by the thorax, it was necessary for the Maker of things to attend to four goals, as it were, in the fabric of the thorax: voice, respiration, and the size of the heart and the lung. The thorax, which has a more or less oval shape, is as large as the size of the lung warranted (figs. 12 and 13, Bk. 6). At the same time, the lung follows the shape of the thorax, not the opposite. In my account of the lung, I shall show with no great difficulty that like the liver, the spleen, or, to a degree, the brain, it required no particular shape,.



Book One -- The things that sustain and support the entire body, and what braces and attaches them all. [the bones and the ligaments that interconnect them] | Chapter 19 On the Bones of the Thorax