"Thoracic cavity" Quotes from Famous Books
 ... human heart, roughly speaking, is about the size of the clenched fist of the individual owner. It is situated very near the center of the thoracic cavity and is almost completely surrounded by the lungs. It is cone-shaped and is so suspended that the small end hangs downward, forward, and a little to the left. When from excitement, or other cause, one becomes conscious of the movements of the heart, these appear to be in the left portion ...
— Physiology and Hygiene for Secondary Schools • Francis M. Walters, A.M. |
