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How Does The Heart Cardiovascular System Work?

Updated: February 29, 2024

Our circulatory and nervous system are connected through organ and bodily functions. Our brains control these functions through our nervous system. Without these messages to our nervous system, our circulatory system would not be able to keep our hearts functioning, circulate, remove fluids/bodily waste throughout our bodies, and maintain our lymphatic system. The circulatory system nourishes the entire nervous system. Both systems have specialized functions that work independently; however, together they depend on each other to make sure our bodies are working properly.


The circulatory system is comprised of arteries, veins, and capillaries and if laid out end to end would span about 60,000 miles with most of the length comprised of capillaries. The circulatory system has two divisions

1.) the cardiovascular system regulates blood flow to the heart, oxygen, blood pressure, and heart rate and

2.) the lymphatic system helps protect our immune system, provides nutrients, and transports interstitial fluid to cells. Regulated by messages from the brain to the nervous system, the nervous and circulatory systems are connected through the lymphatic system and its function; both depending on each other for maintaining homeostasis.

Nervous System and Circulatory System

The circulatory system brings nutrients and oxygen to the nervous system and moves hormones. The nervous system sends electrochemical signals throughout the body and the circulatory system moves our blood. Both bodily systems functioning properly to maintain overall good health is especially important.

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