Circulatory Systems

The smallest type of blood vessel is the:

• nerve

• vein

• capillary

• artery

Veins have special ________________ to stop blood from flowing backward.

• gravity

• valves

• arteries

• ventricles

The circulatory system works with the ___________ system to provide our body with oxygen.

• respiratory

• digestive

• muscular

• skeletal

The cells in the blood that help fight germs and illnesses are the...

• red blood cells

• platelets

• white blood cells

• axons

Tags

NGSS.MS-LS1-3

The circulatory system works with the __________ system to obtain energy from nutrients that we eat. 

• respiratory 

• digestive

• skeletal

• nervous

Which best describes the relationship between the muscular system and the circulatory system? 

• The circulatory system captures carbon dioxide from the air for muscle energy.

• The circulatory system produces red blood cells to bring oxygen to the muscles

• The circulatory system provides a framework for muscle movement

• The circulatory system delivers oxygen for muscle energy

Which body system is responsible for transporting carbon dioxide from cells to the lungs?

• Digestive

• Nervous

• Muscular

• Circulatory

Arteries carry oxygen rich blood away from the heart.

• True

• False

Carry blood away from heart; mostly oxygen-rich

• Arteries

• Veins

• Capillaries

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart