what are the structure and function of blood vessels?
Structure and Function of Blood Vessels—The Lifelines of Circulation Blood vessels are like the highways of the human body—constantly working behind the scenes to transport blood, nutrients, oxygen, and waste products to and from cells. Understanding how blood vessels are structured and how they function gives us a deeper insight into how our circulatory system works so efficiently. What Are Blood Vessels? Blood vessels are tubular structures that carry blood throughout the body. They form a vast network that connects every tissue and organ, working closely with the heart to ensure proper circulation. There are three main types of blood vessels: Arteries Veins Capillaries Each type has a unique structure tailored to its specific function in the circulatory system. Structure of Blood Vessels Despite their differences in size and function, most blood vessels share a similar basic structure composed of three layers : 1. Tunica Intima (Innermost layer) St...