What type of blood vessel carries blood towards the heart?

• Vein

• Artery

• Capillary

• Tube

Which two body systems interact to carry out gas exchange?

• Digestive and Respiratory

• Circulatory and Muscular

• Circulatory and Respiratory

• Muscular and Skeletal

What is the main function of the circulatory system?

• To turn food into nutrients

• To transport substances around the body

• To respond to stimuli

• To move from place to place

Where does gas exchange occur in the lungs?

• Bronchi

• Trachea

• Pharynx

• Alveoli

The diaphragm, trachea, and alveoli are part of the ________________ system.

• Respiratory

• Circulatory

• Digestive

• Endocrine

Arteries carry (almost always) oxygenated blood

• Towards the heart

• Towards the lungs

• Away from the heart

• Away from the lungs

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

• White Blood Cells

• Red Blood Cells

• Platelets

• Plasma

Which part of the blood helps form a clot?

• White Blood Cells

• Red Blood Cells

• Platelets

• Plasma

If you are sick, which part of your blood would there be more of?

• White Blood Cells

• Red Blood Cells

• Platelets

• Plasma

Why are capillaries important to the circulatory system?

• The breakdown of food into usable nutrients occurs there

• The movement of muscles to perform locomotion occurs there

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

• The pumping of blood occurs there