Circulatory & Respiratory Systems

Front

What are the primary components of the circulatory system?

Back

The primary components of the circulatory system are the heart, blood vessels (arteries, veins, and capillaries), and blood.

Front

What is the role of red blood cells in the circulatory system?

Back

Red blood cells carry oxygen from the lungs to the body's tissues and return carbon dioxide from the tissues back to the lungs.

Front

How does the diaphragm assist in breathing?

Back

The diaphragm contracts and flattens to create a vacuum that pulls air into the lungs, and it relaxes to push air out.

Front

What is the function of veins in the circulatory system?

Back

Veins carry deoxygenated blood back to the heart.

Front

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

Back

The main function of the lungs is to facilitate gas exchange, providing oxygen to the blood and removing carbon dioxide.

Front

What is the difference between arteries and veins?

Back

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

Front

What is the significance of capillaries in the circulatory system?

Back

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

Front

What is the process of gas exchange in the lungs called?

Back

The process of gas exchange in the lungs is called respiration.

Front

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

Back

The heart pumps blood throughout the body, supplying oxygen and nutrients to tissues and removing waste products.

Front

What is the importance of oxygen in the human body?

Back

Oxygen is essential for cellular respiration, which produces energy for the body's cells.