Circulatory System

Which is responsible for providing oxygen to cells?

• respiratory system
• circulatory system
• muscular system
• nervous system

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Which system permits blood to circulate and transports nutrients around the body?

• Nervous
• Respiratory
• Circulatory
• Digestive

These cells, in the blood, carry oxygen and give the blood its color.

• white blood cells
• plasma
• platelets
• red blood cells

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

• red blood cells
• platelets
• white blood cells
• axons

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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

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Veins have special ________________ to stop blood from flowing backward.

• gravity
• valves
• arteries
• ventricles

The smallest type of blood vessel is the:

• nerve
• vein
• capillary
• artery

When oxygen-rich blood is carried AWAY from the heart, it travels through an...

• artery
• neuron
• vein
• straw

This type of vessel carries blood TO the heart:

• vein
• nerve
• muscle
• artery

The main function of the circulatory system is 

• To give the body structure and support
• Excrete waste
• transport blood, nutrients, and gases throughout the body
• to transport messages from the body to the brain