Question

The inner lining of the blood vessels is called as

• A. Endothelium
• B. Myocardium
• C. Endocardium
• D. Pericardium

Hint:

Endothelium = "Inner" lining of "vessels"; Endocardium = "Inner" lining of the "heart."

Answer 1

The Correct Option is A

Step 1: Concept
Blood vessels are composed of several layers that provide structural integrity and facilitate smooth blood flow.

Step 2: Meaning
The innermost layer must be exceptionally smooth to prevent friction and blood clotting.

Step 3: Analysis
Myocardium and Endocardium are layers of the heart wall. The Pericardium is the sac surrounding the heart. The Endothelium is a thin layer of simple squamous cells that lines the entire circulatory system, including the interior of blood vessels.

Step 4: Conclusion
Thus, the specific term for the inner lining of blood vessels is the endothelium.

Final Answer: (A)