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Terms in this set (7)
What are the three layers of blood vessels from outer to inner?
Tunia externia, tunica media, tunica intima
What makes up the tunica media allowing it to regulate vessel diameter?
smooth muscle and elastin
What blood vessel generally has the thickest walls and why?
-tunica media has more smooth muscle and elastic tissue = greater constriction and dilation of vessels to regulate blood pressure
What systems in the body aid in venous return of blood?
- skeletal muscle pumping
- valves that prevent backflow
What sort of artery is the largest? why?
- more elastic tissue than other arteries to act as pressure reservoir for continuous blood flow (aorta)
What blood vessel doesn't have all tunics? which tunics does it have?
-only has tunica intima
What three sublayers form the tunica intima?
-Endothelium (simple squamous cells)
-Subendothelial layer (surrounds endthelium)
-Internal elastic membrane (arteries only)
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