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A red blood cell lives only 100 to 120 days after being released from the bone marrow into the blood. The marrow of the long bones continually manufactures new red blood cells to replenish the supply of about 30 trillion red blood cells needed by the circulatory system of a healthy adult human.

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Is it true that one of the functions of the circulatory system is to produce red and white blood cells?

No, the circulatory system does not produce red and white blood cells. Red blood cells are produced in the bone marrow, while white blood cells are produced in various tissues in the body such as the bone marrow and lymph nodes. The circulatory system is responsible for transporting these cells around the body.


Why is the circulatory system important?

The circulatory system is important because it moves blood through all parts of the body. It carries oxygen and nutrients to all parts of the body and removes carbon dioxide and other waste materials.


What is so special about the circulatory system?

The circulatory system is important to humans because the main components are the heart, the blood, and blood vessels.


Is circulatory system is important?

Your circulatory system is important because that is what carries blood to and from all areas of your body. Without your circulatory system, you wouldn't make it far.


What system of the human body is made of blood?

Well,circulatory system is made up of BLOOD and heart.


How are Cardiovascular and circulatory system important?

because they supply blood to the body


Is your heart part of the circulatory system?

Yes the heart is an important part of the circulatory system,pumping blood and oxygen around the body


Which is the system that has blood?

Circulatory System has blood.


Is your blood a respiratory system or the circulatory system?

circulatory system because blood flows through your veins


What system do the heart system belong to?

cardiovascular, circulatory and respiratory.


What are some important questions to ask about the circulatory system?

Some important questions to ask about the circulatory system include: How does the heart pump blood throughout the body? What are the different components of blood and their functions? How do blood vessels help transport nutrients and oxygen to cells? How does the circulatory system help regulate body temperature and maintain homeostasis?


How is the circulatory system important to the digestive system?

the digestive system begins in the mouth ,so if the blood is not flowing how can the food digest if there is no ooxygen in the blood