Exam 13: The Respiratory System

The most important stimulus for breathing in a healthy person is the body's need to rid itself of the blood gas called ________.

________ volume is the air moved into and out of the lungs during normal quiet breathing and is approximately 500 mL of air.

The correct pathway air flows through the respiratory system is ________.

Surfactant prevents lung collapse since it lowers surface tension of the film of water lining each alveolar air sac.

The function of the C-rings of hyaline cartilage in the trachea is to keep the airway patent or open for breathing.

Match the following structure with its description: -Passageway for both food and air; known as the "throat"

Using Figure 13.1, identify the following: -The nasal cavity is indicated by ________.

Identify the two pleural membranes and describe them under normal and disease conditions.

Five-year-old Charlie is angry he can't continue to play so he holds his breath. His carbon dioxide levels continue to climb and his parents are concerned what will happen to him. Predict how the respiratory system handles the rising carbon dioxide levels.

What accounts for the majority of cases of lung cancer?