Question

What are the 3 layers of arteries?

Answer 1

Arteries:

1. The blood vessels that transport oxygen-rich blood from the heart to the body's tissues are known as arteries.
2. The there layers of the arteries are:
   1. Tunica intima: The deepest layer, the tunica intima (also known as tunica interna), is a simple squamous epithelium surrounded by a connective tissue foundation membrane containing elastic fibers.
   2. Tunica media: The tunica medium, or middle layer, is mostly smooth muscle and is usually the thickest. It not only supports the vessel but also adjusts the width of the vessel to control blood flow and blood pressure.
   3. Tunica adventitia: Tunica adventitia is made up of collagen and elastin fibers. Its primary role is to prevent the vessel from extending too far and recoiling. Lymphatic vessels and the vasa vasorum run through this layer.