Circulatory and respiratory Systems

Front

What are the air sacs in the lungs called?

Back

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

Front

What do arteries and veins do in the circulatory system?

Back

Arteries carry blood away from the heart, while veins carry blood back to the heart.

Front

What is the primary function of white blood cells?

Back

White blood cells fight disease and protect the body from infections.

Front

What are the main branches that lead from the trachea to the lungs called?

Back

The main branches are called bronchi.

Front

Which structure is NOT part of the circulatory system?

Back

The trachea is not part of the circulatory system; it is part of the respiratory system.

Front

What is the function of the heart in the circulatory system?

Back

The heart pumps blood throughout the body, supplying oxygen and nutrients.

Front

What is the role of capillaries in the circulatory system?

Back

Capillaries are small blood vessels where the exchange of oxygen, carbon dioxide, and nutrients occurs.

Front

What is the difference between the pulmonary and systemic circulation?

Back

Pulmonary circulation moves blood between the heart and lungs, while systemic circulation moves blood between the heart and the rest of the body.

Front

What is the diaphragm's role in respiration?

Back

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

Front

What is the function of hemoglobin in red blood cells?

Back

Hemoglobin binds to oxygen in the lungs and carries it to tissues throughout the body.