This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'Flexion of metacarpophalangeal joint is produced by? \nSelect and explain. \nA. Lumbricals, B. Dorsal interossei, C. Palmar interossei, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., All of the aboveMetacarpophalangeal joints o These are ellipsoid joints between head of metacarpals and base of proximal phalanx. Movement at MCP joints are flexion, extension, abduction and adduction.Movement Muscles producing movementsFlexion Main muscles :- The lumbricals and the interossei. Suppoive :- Flexor digitorum profundus and superficialis.Extension Main muscles :- Extensor digitorum.Suppoive muscles :-Extensor indicis (for index finger), Extensor digiti minimi (for little finger)Adduction Palmar interosseiAbduction Dorsal interosseiImpoant fact MCP joint is functionally an ellipsoid joint, but it is condylar joint structurally.", 'role': 'assistant'}]