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✔ Original (525 x 507)
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It forms the floor of the thorax (chest) and the roof of the abdomen. It is attached by a strong tendon to the spinal column behind, and to the walls of the thorax at its lowest part, which is below the ribs. In front its attachment is to the cartilage at the pit of the stomach. It also connects with the transverse abdominal muscle. The diaphragm being convex, in inspiration the contraction of its fibres flattens it downward and presses down the organs in the abdomen, thus increasing the depth of the thorax. Expiration depends wholly on other muscles.
- Auteur
- Resonance in Singing and Speaking
By Thomas Fillebrown
Published in 1911
Available from gutenberg.org - Ajoutée le
- Samedi 8 Janvier 2022
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