Circulatory and respiratory systems

What do red blood cells do?

• Carry carbon dioxide to our lungs

• carry blood away from the heart

• carry blood toward the heart

• Carry oxygen to our cells

Veins carry blood ________

• away from the heart

• to the alveoli

• toward the heart

• to the market

Which type of blood vessel is the smallest?

• capillaries

• veins

• arteries

• ventricles

Which are types of blood?

• AB

• A

• C

• BA

• O

When breathing, you inhale ______ and exhale_______.

• Oxygen, CO4

• Carbon monoxide, carbon dioxide

• Carbon dioxide, oxygen

• Oxygen, carbon dioxide

The Aorta is the _________

• top chambers of the heart

• Largest artery in the body

• largest vein in the body

• bottom chamber of the heart

The _______________ circuit carries blood from the heart. to the rest of the body.

• Cellular

• Pulmonary

• Sistic

• Systemic

The part of the respiratory system that looks like an upside-down tree is the ___________.

What muscle contracts and relaxes as you breathe?

• diaphragm

• diaphysis

• lungs

• heart

Choose the components of blood.

• plasma

• hemoglobin

• WBCs

• platelets

• RBCs