Slide - 89

Muscular Arteries: Blood Distribution to Multiple Organs (Multiple Sizes)

re-visit the architecture of these vessels; again appreciating the tri-level architecture.

Intima less thick than in #1; yet the IEL is very prominent.

Media layers gradually taper down (40-to-5 layers thick) with both elastic and reticular fibers present and often an external elastic lamina may be prominent (EEL).

Adventitia is perhaps the best developed here with prominent lymphatics, innervations, and vasa.