This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: AIIMS 2018, Subject name: Anatomy
Ligamentum flavum consists of which fibres:- 
Select and explain. 
A. Type-I collagen, B. Type-II collagen, C. Reticular, D. Elastic
D: Elastic
Answer: D: Elastic 
Explanation: Ligamentum flavum pass b/w the laminae of adjacent veebrae. They consist of predominantly elastic tissue form pa of the posterior surface of the veebral canal. Function: Resist separation of the laminae in flexion & assist in extension back to anatomical position. .