Each Lung Consists of a Number of Segments Called

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

You may have noticed that after a large meal you have had some difficulty breathing.Which explanation is most accurate with regard to this situation? A)The food presses on the bronchi making air flow difficult. B)The large quantity of food retards pulmonary blood flow. C)Oxygen to the lungs is restricted due to fullness in the stomach. D)A full stomach impedes contraction of the diaphragm,limiting inhalation. E)It's just difficult to fill the lungs since blood-filled oxygen is flowing primarily to the stomach.