Respiratory System Quiz

What is the role of the lungs?

• To regulate body temperature

• To digest food

• To exchange gases with the bloodstream

• To pump blood to the rest of the body

What is the function of the alveoli?

• To produce mucus for the lungs

• To increase the rate of carbon dioxide production

• To transport oxygen to the cells

• To regulate blood pressure

What creates a short diffusion pathway in the alveoli?

• Moist walls

• Thin layer of cells

• Large surface area

• Thick layer of cells

How many alveoli do adults have?

• Hundreds of millions

• Millions

• Thousands

• Billions

What is the main function of hemoglobin in the red blood cells?

• Transporting oxygen

• Regulating body temperature

• Transporting carbon dioxide

• Producing energy for the cells

What is the main function of carbon dioxide in the blood?

• Transporting oxygen

• Diffusing into the alveoli

• Regulating blood pressure

• Dissolving in the blood plasma

What is the equation to calculate breathing rate?

• Number of breaths taken multiplied by time in minutes

• Number of breaths taken divided by time in minutes

• Number of breaths taken minus time in minutes

• Number of breaths taken plus time in minutes

What happens to breathing rate during exercise?

• It remains the same

• It increases

• It stops completely

• It decreases