Ligamentum flavum consists of:
Type-II collagen
Type-III collagen
Reticulin
Elastin
Ans. D. ElastinLigamentum flavum connects the laminae of adjacent veebrae.The ligamentum flavum has a high content of elastin. So under tension it can be stretched by 80% without damage.Functions of ligamentum flavum to provide a constant smooth lining to the veebral canal, which is never overstretched in flexion and which never goes slack in extension.