Circulatory System Lesson 1 Review

The name of the main organ in the circulatory system is the

• lungs

• heart

• kidney

• artery

Which is the largest blood vessel in the circulatory system?

• capillaries 

• artery

• vein

• muscles

All of the following are parts of the circulatory system except 

• blood vessels 

• lungs

• heart

• blood

Which of the following is the smallest blood vessel in the circulatory system?

• capillaries

• artery

• vein

• muscles

Which blood vessel is responsible for taking blood to the heart from the body?

• capillaries

• artery

• vein

• muscles

Which blood vessel is responsible for taking blood away from the heart to the body?

• capillaries

• artery

• vein

• muscles