Large Vein
Identification Points
1. Three layers of blood vessel-tunica
intima, tunica media, tunica
adventitia (externa).
2. Tunica externa is thickest with smooth
muscle fibers arranged in
longitudinal bundles.
Medium Sized / Muscular Artery
Identification Points
1. Three layers of blood vessel-tunica intima,
tunica media, tunica adventitia (externa).
2. Tunica media is thickest with more
smooth muscle fibers.
3. Internal elastic lamina is prominent.
Large Sized / Elastic Artery
Identification Points
1. Three layers of blood vessel-tunica intima,
tunica media, tunica adventitia (externa).
2. Tunica media is thickest with more
elastic fibers.
3. Internal elastic lamina not prominent.