The conducting zone contains all of the following EXCEPT the

The conducting zone contains all of the following EXCEPT the primary bronchi the larynx. the terminal bronchioles. the respiratory bronchioles. Which of the following is true? Blood in the pulmonary veins is low in oxygen. Blood in the pulmonary veins is high in carbon dioxide. The oxygen concentration of inspired air is higher than that of alveolar air. All of the choices are true.

Solution

7. ANS: D. the respiratory bronchioles.

Explanation:

Conducting zone:

It is lined with ciliated epithelium throughout, except in parts of pharynx shared with GI tract (stratified squamous), in bronchioles (simple epithelia). The conducting zone can contains the primary bronchi, the larynx and the terminal bronchioles.

8. ANS: C. The oxygen concentration of inspired air is higher than that of alveolar air.