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Circulatory System Definition

The circulatory system pumps blood throughout the body, providing it with oxygen and removing waste. It consists of your heart and blood vessels.

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Human Body Systems

LESSON MATERIALSmove

Fun Facts

  • The heart, the essential organ of the circulatory system, pumps 60-100 times per minute at rest.
  • The circulatory system provides the body with nutrients that are transported in the blood.
  • The left side of the heart circulates oxygen-rich blood to the body. The right side of the heart circulates blood to the lungs to add oxygen to it.

Why Do We Need To Know About Circulatory System

Learning about how our blood moves around the body helps us see how it works closely with how we breathe. This knowledge is important for jobs in healthcare, sports, and helping people with breathing problems. It shows why having a strong and efficient system for blood flow is key to staying healthy and doing well in sports.

For example, Olympic athletes work hard to make their blood system better to improve in their sports. Also, using new technology to make artificial hearts shows how crucial our blood system is in medical science, providing new ways to help people with heart problems.

Frequently Asked Questions

What would happen if one body system did not interact with the other systems?
It would be hard for the body to perform its important functions. Since all systems are interconnected, if one does not work this affects how the others will function too.
If a person’s heart rate increases how will this benefit the muscular system?
When the heart rate increases more blood is pumped through the circulatory system. This blood is sent to the muscular system to help your muscles work and keep the body moving.
How is the left side of the heart different from the right side of the heart?
The left side of the heart receives blood from the lungs, which contains oxygen. The right side of the heart has blood with less oxygen. This is because the oxygen has been used up to help power your other body systems.
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