This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anesthesia, Subject name: Pharmacology
[{'content': 'Wof skeletal muscles is relaxed first by tubocurarine \nSelect and explain. \nA. Respiratory muscles, B. Head and neck muscles, C. Finger muscles, D. Limb muscles', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ACTIONS Skeletal muscles:- Intravenous injection of nondepolarizing blockers rapidly produces muscle weakness followed by flaccid paralysis. Small fast response muscles (fingers, extraocular) are affected first; paralysis spreads to hands, feet--arm, leg, neck, face--trunk--intercostal muscles--finally diaphragm: respiration stops. Recovery occurs in the reverse sequence; diaphragmatic contractions resume first. Ref:- kd tripathi; pg num:-350', 'role': 'assistant'}]