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.
The gross looking ball of yuck up above is 1 lb. of fat. Everyone wants to get rid of their fat, but the truth is, you could never get rid of all of it. Nor would you want to! In fact fat is so essential to our health that an average size 10, slim female carries approximately 100,000 calories of fat on her body. The average woman. 5 ft. 4 in. weighs 166 lbs.