This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
Following is true about safety muscle of tongue 
Select and explain. 
A. Innervated by cranial pa of accessory nerve, B. Hypoglossal nerve, C. Attached to hard palate, D. None of the given options
B: Hypoglossal nerve
Answer: B: Hypoglossal nerve 
Explanation: Ref BDC volume 3,6th edition pg 268Genioglossus is a life-saving muscle and its action is to protrude the tongueAll intrinsic and extrinsic muscles except palatoglossus are supplied by hypoglossal nerve