Answer :
The tissue that makes up the lining of blood vessels is epithelial tissue. Epithelial tissue is a type of tissue that lines the surfaces of the body, including blood vessels. It forms a protective barrier and helps with the exchange of substances between the blood and surrounding tissues.
Epithelial tissue is composed of tightly packed cells that are arranged in one or more layers. It serves as a protective layer to prevent the entry of pathogens and regulates the exchange of molecules like oxygen and nutrients across the blood vessel walls.
In the context of blood vessels, the epithelial tissue lining is essential for maintaining the integrity of the vessel walls, allowing for efficient transport of blood, and facilitating the exchange of gases and nutrients between the blood and surrounding tissues.
In summary, epithelial tissue is the type of tissue that lines the blood vessels and plays a crucial role in the proper functioning of the circulatory system.
