Respiratory System Quiz

What is the primary function of the nasal cavity in the respiratory system?

• Gas exchange

• Humidification and warming of air

• Carbon dioxide excretion

• Regulation of breathing rate

What is the process of oxygen delivery from air to blood called?

• Hemolysis

• Diffusion

• Perfusion

• Oxidation

How many lobes does the right lung normally have?

• 2

• 3

• 4

• 5

What is the average minute ventilation of the lungs in an adult at rest?

• 2-4 liters

• 5-8 liters

• 10-12 liters

• 15-20 liters

What structure is the primary site for gas exchange?

• Alveoli

• Bronchi

• Trachea

• Bronchioles

What is the average tidal volume of air (in adults)?

• 200 ml

• 500 ml

• 1000 ml

• 1500 ml

What is the volume of air remaining in the lungs after a maximum exhalation called?

• Inspiratory reserve volume

• Functional residual capacity

• Residual volume

• Vital capacity

Which gas is the main stimulus for the respiratory center?

• Oxygen

• Carbon dioxide

• Nitrogen

• Water vapor

What is the outer membrane of the lung called?

• Pleura

• Pericardium

• Peritoneum

• Endothelium

What is one of the primary functions of the lungs?

• Water exchange

• Body temperature regulation

• Gas exchange

• Nitrogen excretion