Final answer:
The functions of the cardiovascular system include transport, protection, and regulation.
Step-by-step explanation:
The cardiovascular system, also known as the circulatory system, has three main functions: transport, protection, and regulation.
- Transport: The cardiovascular system transports oxygen, nutrients, hormones, and waste products to and from the cells of the body. The heart pumps oxygenated blood to the body's tissues through a network of blood vessels. Deoxygenated blood returns to the heart to be oxygenated again.
- Protection: The cardiovascular system includes white blood cells that defend the body against pathogens and foreign substances. Platelets also help in the clotting process to prevent excessive bleeding.
- Regulation: The cardiovascular system helps regulate body temperature, pH levels, and electrolyte balance. It also plays a role in the regulation of blood pressure.