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- The arteries are responsible for carrying the blood from the heart into the different body parts.
- The walls of arteries consist of three layers of tissue as follows:
- Tunica Externa: It is the outer layer that consists of fibrous tissue (collagen fibers).
- Tunica Media: It is the middle layer of the vein. It consists of smooth muscle and elastic tissue.
- Tunica Interna: It is the inner layer that forms the surface of the lumen. It comprises squamous epithelium, also known as endothelium.
