Unit 9: The Gas Exchange System

Cartilage is found in which structure?

• Alveolus

• Bronchiole

• Capillary

• Trachea

Which statements about all bronchioles are correct?

1 they have goblet cells

2 they have ciliated cells

3 they have muscle tissue

• 1, 2 and 3

• 1 and 2 only

• 1 and 3 only

• 2 and 3 only

What is tissue x?

What structure in the gas exchange system is this a picture of?

Which of the following is NOT a role of elastic fibers in the gas exchange system?

• Contract to decrease the volume of the alveoli during exhalation

• Recoil to force air out of the alveoli during exhalation

• Stretch to accommodate more air in the alveoli during deep breathing

• Stretch to increase the surface area of the alveoli for gas exchange

Which part of the human respiratory system is primarily responsible for the exchange of gases?

• Trachea

• Bronchi

• Alveoli

• Larynx

What is the primary function of the cilia in the respiratory system?

• To exchange gases

• To warm the air

• To filter and trap particles

• To produce mucus

Which statement is correct?

• Alveoli have goblet cells to produce mucus to trap pathogens from the air.

• Cartilage in the bronchi keeps the bronchi open and allows air to flow through freely

• Complete rings of cartilage in the bronchioles make sure that air can reach the alveoli.

• During exercise, muscles in the bronchioles and alveoli relax to allow a greater flow of air.

Tags

NGSS.HS-LS2-5

What structure is this a picture of?

• Trachea

• Bronchus

• Bronchiole

• Alveoli

Tags

NGSS.HS-LS2-3

What structure is this a picture of?

• Trachea

• Bronchus

• Bronchiole

• Alveoli