This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Costochondral joint is an example of 
Select and explain. 
A. Fibrous joint, B. Primary cailaginous joint, C. Secondary cailaginous joint, D. Synol joint
B: Primary cailaginous joint
Answer: B: Primary cailaginous joint 
Explanation: Primary Cailaginous joint The bones are united by a plate of hyaline cailage so that the joint is immovable and strong These joints are tempory in nature because after a ceain age the cailaginous plate is repalced by bone (synostosis) Ref :BD CHAURASIA S Handbook of General Anatomy Fouh edition Page no 63