4.- The Circulartory System - General System Function

General System Function:

The circulatory system is composed of the heart, blood vessels and blood. It's like a network of organs that connect the blood, nutrients, hormones, oxygen...
Without the circulatory system, the body could not fight off diseases.
The function of the system is to provide oxygen and nutrients transporting throughout the body.
It also helps maintain normal body temperature.

Functions:

- Breathing: Provides oxygen to the cells and removes carbon dioxide.

- Nutrition - carries digested food substances the body's cells.

- Disposal: Waste and toxins that damage the body.

- Immunity: Helps protect the body against disease.

- The cellular communication: The circulatory system carries hormones throughout the body.

- Temperature control: The circulatory system transports heat (hot and cold can both body).

Webgraphy:

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

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