Which tissues does not contribute to the functioning of an artery **Question:**Which tissue does NOT contribute to the functioning of an artery?**Options:**- Simple squamous epithelium forms the lining and prevents abnormal clotting. - Cardiac muscle pumps blood. - Elastic connective tissue helps maintain normal blood pressure. - Smooth muscle tissue helps maintain normal blood pressure.**Explanation:**Arteries are blood vessels that carry blood away from the heart. They consist of different types of tissues that play specific roles in their function. Simple squamous epithelium lines the inner surface, providing a smooth layer that minimizes resistance and prevents clotting. Elastic connective tissue allows arteries to stretch in response to pressure from the heart, helping to maintain consistent blood pressure. Smooth muscle tissue in the arterial walls helps regulate blood flow and pressure through contraction and relaxation.**Correct Answer:** Cardiac muscle pumps blood.Cardiac muscle is specialized for heart contraction and does not contribute directly to the structure or function of arteries.

Introduction: The blood vessels transport blood throughout the body. The three major types of blood vessels include veins, arteries, and capillaries. Arteries carry the oxygen-rich blood from the heart to various cells and tissues of the body. The veins bring the deoxygenated blood from the tissues to the heart. The connection between the veins and the arteries is formed by smaller blood vessels referred to as capillaries.Correct option: The fourth option that mentions 'smooth muscle tissue helps maintain normal blood pressure is correct. Vascular smooth muscle cells are the significant cells of the arterial tunica media and function to keep the arterial wall's integrity. They cause the remodeling of the walls of the arteries and have an essential role in atherosclerosis during the complete phase of the disease. However, they do not play any role in maintaining blood pressure. Incorrect options: The first option that mentions 'simple squamous epithelium forms the lining and prevents abnormal clotting' is incorrect. A single layer of these flat and thin epithelial cells makes the lining of the internal surface of the blood vessels. They provide a surface that allows smooth blood cell flow via the blood vessel. These tissues thus contribute to the functioning of an artery. The second option that mentions 'cardiac muscle pumps blood' is incorrect as the cardiac muscle cells are responsible for the heart's pumping, thereby moving the blood into the blood vessels. Thus, these contribute to the functioning of an artery. The third option that mentions 'elastic connective tissue helps maintain normal blood pressure is incorrect. The elasticity of the arteries gives the Windkessel effect that aids in keeping the pressure relatively constant in the arteries despite the pulsating blood flow. Conclusion: Option fourth is correct.