Respiratory System Review Quiz

What is the primary function of the respiratory system?

• To digest food

• To circulate blood

• To exchange gases

• To filter waste from the blood

Where does gas exchange occur in the lungs?

• Bronchi

• Alveoli

• Trachea

• Larynx

What is the role of the diaphragm in respiration?

• It filters the air entering the lungs

• It aids in the exchange of gases

• It contracts and relaxes to change lung volume

• It warms the air before it enters the lungs

During inspiration, the diaphragm:

• Contracts and moves upward

• Contracts and moves downward

• Relaxes and moves upward

• Relaxes and moves downward

The respiratory zone of the respiratory system includes:

• Trachea and bronchi

• Nasal cavity and pharynx

• Alveoli and surrounding capillaries

• Larynx and vocal cords

External gas exchange refers to the exchange of gases between:

• Blood and body cells

• The atmosphere and the lungs

• The lungs and the blood

• The blood and the heart

Internal gas exchange occurs in the:

• Lungs

• Heart

• Tissues

• Kidneys

During expiration, the diaphragm:

• Contracts and moves downward

• Contracts and moves upward

• Relaxes and moves upward

• Relaxes and moves downward

What mechanism allows for the movement of oxygen from the alveoli into the blood?

• Active transport

• Diffusion

• Osmosis

• Filtration

Which of the following is NOT a structure of the respiratory system?

• Esophagus

• Bronchus

• Larynx

• Pharynx