Respiration System Flashcard

Front

How do terrestrial vertebrates, except birds, breathe?

Back

By contracting the diaphragm.

Front

How do aquatic animals facilitate gas exchange?

Back

Through gills.

Front

What is the main function of the respiratory system in animals?

Back

Gas exchange.

Front

Where does gas exchange occur in the lower respiratory tract?

Back

Alveoli.

Front

Which gas is a waste product of cellular respiration that is expelled from the body through the respiratory system?

Back

Carbon dioxide (CO2).

Front

What is the role of the diaphragm in respiration?

Back

The diaphragm contracts and relaxes to help draw air into and push air out of the lungs.

Front

What are alveoli and their function?

Back

Alveoli are tiny air sacs in the lungs where gas exchange occurs.

Front

What is the difference between external and internal respiration?

Back

External respiration is the exchange of gases between the atmosphere and the blood, while internal respiration is the exchange of gases between the blood and body cells.

Front

What is the significance of gills in aquatic animals?

Back

Gills allow aquatic animals to extract oxygen from water and expel carbon dioxide.

Front

What is the pathway of air during inhalation?

Back

Air enters through the nose or mouth, travels down the trachea, and into the bronchi and bronchioles before reaching the alveoli.