The Lungs (Figs. , )

Trachea and Bronchi

The trachea is circular in cross-section, and contains thirty or more rings which almost meet dorsally. A special bronchus is detached for the apical lobe of the right lung, as in the ox.

The right lung has four or five lobes, according to whether the apical is subdivided or not. The left lung resembles that of the ox in form and lobation. The lobulation is distinct, but the interlobular septa are thinner than in the ox.