2025 Circulatory & Respiratory Review

Front

What is the diaphragm?

Back

Muscle beneath the lungs which is used for breathing.

Front

What is the site of gas exchange in the lungs?

Back

Alveoli.

Front

What do red blood cells do?

Back

Carry oxygen from the lungs to the body cells and transport carbon dioxide from the cells back to the lungs.

Front

What are capillaries?

Back

Thin-walled vessels that allow for the exchange of O2, CO2, nutrients, and wastes between blood cells or air sacs in the lungs.

Front

What is the largest artery in the body?

Back

The aorta.

Front

What type of blood do arteries carry away from the heart?

Back

Oxygen-rich blood.

Front

What is the function of veins?

Back

Carry deoxygenated blood back to the heart.

Front

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

Back

Pumps blood throughout the body.

Front

What is the function of the lungs?

Back

Facilitate gas exchange, allowing oxygen to enter the blood and carbon dioxide to be expelled.

Front

What is the role of oxygen in the body?

Back

Essential for cellular respiration and energy production.