elastins

elastins

Extracellular scleroproteins capable of two-way stretch and rapid recoil. The amount of stretch is limited by the tethering effect of interwoven inelastic collagen fibrils. Elastins are present in quantity in the lungs, large arteries, the ligaments of the spine and in the skin.
References in periodicals archive ?
Elastin allows tissues in humans and other mammals to stretch, for example when the lungs expand and contract for respiration or when arteries widen and narrow when the heart beats.
All mammals rely on elastin to provide their tissues with the ability to stretch and then return to their original shape," said researcher Dr Clair Baldock.
This high level of physical performance demanded of elastin vastly exceeds and indeed outlasts all human-made elastics.