The hilum of the lung
A. serves to anchor all pulmonary structures to the mediastinum.
B. is an indented area through which the bronchi, pulmonary vessels, lymphatic vessels, and nerves pass.
C. is the point of exit of exhaled air.
D. is an elevated area through which the trachea, pulmonary vessels, and nerves pass.
E. is the point of entrance for inhaled air.
Answer: B
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