This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb, Subject name: Anatomy
[{'content': 'Power grip of hand depends on? \nSelect and explain. \nA. Sho flexor of fingers, B. Lumbricalsofhand, C. Long flexors of the fingers, D. Palmaris brevis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: in power grip ,4 finger pulps are opposed to thenar eminence.the thumb base and thenar pad provide fixed buttress.The MCP joints of other fingers are flexed by the interossei and lumbricals. Long flexors flex PIP joints but the DIP is flexed by Flexor digitorum profundus alone. The profundus is more impoant in power grip and the ulnar nerve too as it supplies the FDP. The contraction of palmaris brevis imroves grip. Reference: Clinical Anatomy for students: a problem-solving approach, Neeta v Kulkarni,1st edition, pg no.106', 'role': 'assistant'}]