MICROANATOMY

Detailed explanation-1: -Arteries are always under high pressure. To accommodate this stress, they have an abundance of elastic tissue and less smooth muscle. The presence of elastin in the large blood vessels enables these vessels to increase in size and alter their diameter.

Detailed explanation-2: -It is a stiffness measurement based on a widely accepted “propagation model” of the arterial tree. The result is an average speed between the carotid artery and the femoral artery, and represents the aortic stiffness and therefore the afterload the left ventricle must withstand during systolic ejection.