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www.healthline.com/human-body-maps/circulatory-system

The circulatory system consists of four major components: The Heart: About the size of two adult hands held together, the heart rests near the center of the chest.Thanks to consistent pumping, the ...

www.fit-ed.org/congress2008/contents/ALIGAEN/Circulatory system and its functions.htm

THE CIRCULATORY SYSTEM AND ITS FUNCTION. Circulatory System. The circulatory system is made up of the heart, blood and blood vessels known as arteries, capillaries and veins. The heart pumps blood throughout your body through the blood vessels. Blood delivers oxygen and nutrients to cells and carries away carbon dioxide and other waste materials.

www.livescience.com/22486-circulatory-system.html

The human circulatory system keeps blood, oxygen and nutrients flowing through the body. A description of the circulatory system's function, organs and diseases that affect it.

study.com/academy/lesson/the-human-circulatory-system-parts-and-functions.html

This system is called your circulatory system, and in this lesson, you will learn about the different parts of the circulatory system and how these parts help move needed substances throughout ...

biologydictionary.net/circulatory-system

Circulatory System Parts. The circulatory system consists of the heart, blood, blood vessels, lymph, and lymphatic vessels. While the heart is the only “organ” of the circulatory system, it is really only a vessel surrounded by muscles. The circulatory system does not have standard organs. Heart

en.wikipedia.org/wiki/Circulatory_system

The circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment and help in fighting diseases, stabilize temperature and pH, and maintain homeostasis.

www.quora.com/What-are-main-parts-of-the-circulatory-system-and-their-functions

Main Circulatory System Organs Your circulatory system consists of the heart and blood vessels. It also includes about 5 liters of blood that your heart transports through your blood vessels. 1. The Heart Located slightly to the left of the middle...

www.kenhub.com/en/library/anatomy/circulatory-system

The circulatory system is a vital organ system that delivers essential substances to all cells for basic functions to occur. Also commonly known as the cardiovascular system, is a network composed of the heart as a centralised pump, bloods vessels that distribute blood throughout the body, and the blood itself, for transportation of different substances.

sciencing.com/functions-human-circulatory-system-5379712.html

The purpose of the human circulatory or cardiovascular system is to transport blood cells and materials to and from the cells that make up the body's tissues. Functions include supplying oxygen, removing carbon dioxide, providing nutriets and hormones and transporting immune system components.

healthywaymag.com/biology-and-anatomy/circulatory-system

The 4 parts of the cardiovascular system. All the systems in our body are formed by different organs and tissues, which all together serve a vital function. The circulatory system has four main parts or components: the heart, the arteries, the veins, and the blood. Here you have the main characteristics of all of them.