circulatory system practice questions 2

In which direction do arteries carry blood?

• Away from the heart

• Towards the heart

• In a circular motion around the heart

• Randomly in any direction

In which direction do veins carry blood?

• Away from the heart

• Towards the heart

• In a circular motion around the heart

• Randomly in any direction

What is the main function of the circulatory system?

• To digest food

• To supply oxygen to all the cells in the body

• To remove waste from the body

• To protect the body from diseases

What happens to the blood when it contains a lot of oxygen?

• It becomes bright red

• It becomes bluish-red

• It becomes clear

• It becomes green

What term is used to describe blood that has lost most of its oxygen?

• Oxygenated

• Carbonated

• Deoxygenated

• Hydrogenated

Where does the oxygen enter the blood in the human body?

• In the heart

• In the stomach

• In the lungs

• In the muscles

What should a model of the human circulatory system include to represent the blood vessels that run between the heart and the lungs?

• Red and blue wire

• Only blue wire

• Only red wire

• Only purple wire

Where does blood flow after it leaves the heart?

• Into the lungs

• Into the arteries

• Into the veins

• Into the capillaries

What does blood release as it passes through the tissues in the rest of the body?

• Carbon dioxide

• Oxygen

• Hemoglobin

• Red blood cells

Where is the heart located in the human body?

• Just under the ribs, slightly to the right of the center of the body

• Just under the ribs, slightly to the left of the center of the body

• In the center of the chest, aligned with the sternum

• In the lower abdomen, below the stomach