Circulatory and Respiratory Systems

Front

What type of blood vessel carries blood towards the heart?

Back

Vein

Front

What is the main function of the circulatory system?

Back

To transport substances around the body

Front

Which part of the blood carries oxygen in a protein called hemoglobin?

Back

Red Blood Cells

Front

Arteries carry (almost always) oxygenated blood: Towards the heart, Towards the lungs, Away from the heart, Away from the lungs?

Back

Away from the heart

Front

Why are capillaries important to the circulatory system?

Back

The exchange of materials between the blood and body cells occurs there

Front

What is the primary organ of the respiratory system?

Back

Lungs

Front

What gas do we inhale that is essential for respiration?

Back

Oxygen

Front

What is the process called when oxygen and carbon dioxide are exchanged in the lungs?

Back

Gas exchange

Front

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

Back

To pump blood throughout the body

Front

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

Back

Alveoli