Respiratory System

What are the air sacs in the lungs where gas exchange occurs called?

• Bronchi

• Alveoli

• Trachea

• Larynx

How does the respiratory system help regulate body temperature?

• By expelling warm air and allowing cooler air to enter.

• By increasing heart rate to pump more blood to the skin.

• By producing sweat to cool the body down.

• By constricting blood vessels to retain heat.

What is the difference between inhalation and exhalation?

• Inhalation is the process of taking air into the lungs, while exhalation is the process of pushing air out.

• Inhalation is the process of pushing air out of the lungs, while exhalation is the process of taking air in.

• Inhalation occurs only during physical activity, while exhalation occurs at rest.

• Inhalation and exhalation are the same processes that occur simultaneously.

What is the role of the bronchi in the respiratory system?

• They are the main passageways that branch from the trachea into each lung.

• They are responsible for gas exchange in the lungs.

• They filter and humidify the air before it reaches the lungs.

• They are the muscles that control breathing.

What happens to the lungs when the diaphragm relaxes?

• The lungs expand, allowing more air in.

• The lungs shrink, pushing air out.

• The lungs remain the same size, with no air movement.

• The lungs fill with fluid, causing difficulty in breathing.

What happens to oxygen in the body after it is inhaled?

• It is exhaled back out of the body.

• It is converted into carbon dioxide.

• It is transported to cells for cellular respiration.

• It is stored in the lungs for later use.

What is the process called that uses glucose and oxygen to produce energy in cells?

• Cellular respiration

• Photosynthesis

• Fermentation

• Glycolysis

What is the function of the trachea in the respiratory system?

• Passageway for air to enter and exit the lungs.

• Filters and humidifies the air before it reaches the lungs.

• Produces mucus to trap foreign particles.

• Regulates the temperature of the air entering the lungs.

What is the significance of capillaries in the alveoli?

• They allow for the exchange of gases (oxygen and carbon dioxide) between the blood and the air.

• They transport nutrients to the alveoli.

• They help in the production of surfactant in the lungs.

• They prevent the collapse of the alveoli.

What is the role of alveoli in the respiratory system?

• They facilitate the exchange of oxygen and carbon dioxide between the air and blood.

• They produce mucus to trap dust and pathogens.

• They help in the mechanical process of breathing by expanding and contracting.

• They store oxygen for later use during respiration.