Kid's guide to the circulatory system

Ahmed Raza

Written by , Sarah has worked in various roles at Coffee Medical Center including nurse, education director, and quality assurance director.

The circulatory system is responsible for delivering nutrients to the cells in the body to help them to function properly. This system carries blood, together with oxygen, to the whole human body.

The heart pumps blood and other nutrients throughout the circulatory system. Once the blood moves through the entire body, the circulatory system passes it back to the heart where it starts all over again. This process takes only about 60 seconds.

The following links will provide resources for teaching children all about the circulatory system and the human heart. These include interactive activities and worksheets for children as well as lesson plans and ideas for teachers and peds nurses. Take our PALS online course or PALS recertification to learn more about this topic.

About the circulatory system

The heart

Circulatory system activities

Lesson plans & teacher resources

Test your knowledge

Question 1. What is the primary responsibility of the circulatory system?
  • To filter waste from the body
  • To deliver nutrients to cells in the body
  • To produce blood cells
  • To regulate body temperature only
Question 2. How long does it take for blood to complete one full circulation through the body?
  • About 30 seconds
  • About 60 seconds
  • About 90 seconds
  • About 2 minutes
Question 3. What does the heart pump throughout the circulatory system besides blood?
  • Air and carbon dioxide
  • Nutrients and oxygen
  • Hormones only
  • Water and electrolytes only
Question 4. What happens to blood after it moves through the entire body?
  • It is filtered by the kidneys and discarded
  • It is stored in the liver
  • The circulatory system passes it back to the heart
  • It is absorbed by the tissues permanently
Question 5. What additional training courses are mentioned for learning more about pediatric circulatory care?
  • BLS and ACLS courses
  • PALS online course or PALS recertification
  • CPR and First Aid courses
  • Advanced Trauma Life Support (ATLS)

Stay on track!

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How we reviewed this article

Our experts continually monitor the medical science space, and we update our articles when new information becomes available.

Current version
Jun 25, 2023

Copy edited by:

Copy editors
Feb 11, 2020

Reviewed by:

Michael A. Tomeo MD
Dr. Michael A. Tomeo is the former chief of dermatology at Holy Redeemer Hospital. He maintains a teaching appointment at Hahnemann University as a clinical instructor of dermatology.
Apr 23, 2017

Written by:

Sarah Gehrke, MSN, RN
Sarah has worked in various roles at Coffee Medical Center including nurse, education director, and quality assurance director.