The physical signs of pulmonary disease / by Graham Steell.

  • Steell, Graham, 1851-1942.
Date:
1882
Catalogue details

Licence: Public Domain Mark

Credit: The physical signs of pulmonary disease / by Graham Steell. Source: Wellcome Collection.

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    the pulmonary substance, and forms communication between its vesicles and the external air. Commencing at the larynx on a level with the body of the sixth cervical vertebra, the tracheal portion extends down to the body of the fourth dorsal vertebra. The trachea then divides into the right and left bronchi, the right being more horizontal, shorter, and of some¬ what greater calibre. Having reached the internal surface Fig. II. (from Sir William Turner’s Anatomy.)—The Vesicular Structure of the Lung. . B, lobular bronchus ; av, air vesicles ; A, pulmonary artery ; c, pulmonary capil¬ laries. V, pulmonary vein. of the lung and plunged into its substance, the bronchi divide and sub-divide : the tubes resulting from this division gradually diminish in size, but they retain supporting cartila¬ ginous structure in their wall until they reach a diameter of about the -o-Q-th of an inch, although this in its amount and regularity of distribution decreases steadily from the entrance of the bronchi into the lung.