Circulatory System

• Cardiovascular conduits include typical medium artery, which has connective tissue in its tunica intima and tunica media for support.
• A typical medium artery has three layers: tunica adventitia (outer), tunica media (middle), and tunica intima (endothelium & inner layer).
• The tunica adventitia of a typical medium artery is a connective tissue blended to its surrounding.
• The tunica media of a typical medium artery has smooth muscle which is circularly arranged, and elastic and collagenous fibers are present.
• The tunica intima of a typical medium artery is lined by simple squamous epithelium, has a small amount of connective tissue, and has an internal elastic membrane.
• A typical medium artery is a perfect example of a highly vascularized organ, with a network of arteries and veins present.
• Arteries tend to be more round in cross-section, have an internal elastic membrane, are thicker in their tunica media/smooth muscle layer, and are a perfect example of a highly vascularized organ, with a network of arteries and veins present.
• Veins tend to be larger in diameter and have a collapsed irregular lumen because they don't have much connective tissue layers in their tunica media.
• Veins do not have an elastic membrane, have purkenje cells (x.s / L.s) present, and have a thick tunica adventitia instead of tunica media.