The structure and general functions of veins. Concept introduction: The cardiovascular system, which is also known as circulatory system, allows the blood to flow throughout the body and transports nutrients, gases, and other important enzymes in and out of the cells. The cardiovascular system is composed of two components, namely the heart and blood vessels. The three types of blood vessels are arteries, veins, and capillaries.

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Chapter 20.1, Problem 7LO

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To describe: The structure and general functions of veins.

Concept introduction: The cardiovascular system, which is also known as circulatory system, allows the blood to flow throughout the body and transports nutrients, gases, and other important enzymes in and out of the cells. The cardiovascular system is composed of two components, namely the heart and blood vessels. The three types of blood vessels are arteries, veins, and capillaries.

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