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
Motor nerve supply of muscles of upper lip is by 
Select and explain. 
A. Temporal branch of facial nerve, B. Zygomatic branch of facial nerve, C. Buccal branch of facial nerve, D. Marginal mandibular branch of facial nerve
C: Buccal branch of facial nerve
Answer: C: Buccal branch of facial nerve 
Explanation: Temporal—frontalis, auricular muscles, orbicularis oculi 
Zygomatic—Orbicularis oculi 
Buccal—muscles of the cheek and upper lip 
Marginal mandibular—muscles of lower lip. 
Cervical—platysma