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
Power grip of hand is due to 
Select and explain. 
A. Palmaris, B. Long flexors, C. Sho flexors, D. Lumbricals
C: Sho flexors
Answer: C: Sho flexors 
Explanation: In power grip, the extrinsic muscles provide the major force, the interossei are used as flexors and rotators at the metacarpophalangeal joints, and the thenar muscles are generally active