The walls of arteries and veins are composed of endothelial cells, smooth muscle cells and extracellular matrix (including collagen and elastin). These are arranged into three concentric layers: intima, media and adventitia. The intima is the inner layer abutting the vessel lumen.he walls of arteries and veins are composed of endothelial cells, smooth muscle cells and extracellular matrix (including collagen and elastin). These are arranged into three concentric layers: intima, media and adventitia. The intima is the inner layer abutting the vessel lumen.
The correct phrase is It's not over until the fat lady sinks and has its origins in the game of billiards. The black eight ball was commonly referred to as the fat lady so no matter how bad the game was for a competitor it wasn't over until the fat lady sank.!! Debbie Pollard, Yorkshire uk.
Solange Knowles Calls ''Sassy Pants'' Blue Ivy Her ''Twin'' and an ''Incredibly Smart, Beautiful Niece''. Solange Knowles is the best aunty ever! The newly married singer took to Instagram to share a few heartfelt words about her niece, Blue Ivy Carter, who turned 3 years old yesterday. My twin, my fellow sassy pants, my dancing partner, my incredibly smart, beautiful, niece-y-poo, turns 3 today! I love her so much, Solange wrote.