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Category: Cardiovascular System – Blood Vessels and Blood

This illustration activity shows the ultrastructure of a vein (from top: tunica externa, tunica media, tunica intima, vasa vasorum, smooth muscle, endothelium).

Cardiovascular System - Blood Vessels and Blood

Activity 15 – Vein Composition

This illustration activity shows the ultrastructure of an artery (from top: tunica externa, tunica media, tunica intima, smooth muscle, internal elastic membrane, vasa vasorum, external elastic membrane, nervi vasorum, endothelium, elastic fiber).

Cardiovascular System - Blood Vessels and Blood

Activity 14 – Artery Composition