This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper Extremity, Subject name: Anatomy
Supination occurs at which joint: 
Select and explain. 
A. Elbow, B. Wrist, C. Radio-ulnar, D. Metacarpophalangeal
C: Radio-ulnar
Answer: C: Radio-ulnar 
Explanation: Ans. C. Radio-ulnarPronation and supination are a pair of unique movements possible only in the forearms and hands, allowing the human body to flip the palm either face up or face down. This movement occurs at proximal & distal radio-ulnar joint. Supination is by supinator & biceps brachii. Pronation is by pronator teres & quadratus.