This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Embryology, Subject name: Anatomy
Tongue muscle derived from: 
Select and explain. 
A. Occipital myotomes, B. Somites, C. Endoderm of pharyngeal pouch, D. Mesoderm of pharyngeal pouch
A: Occipital myotomes
Answer: A: Occipital myotomes 
Explanation: Ans. a. Occipital myotomesThe paraxial mesoderm organizes into segments known as somitomeres, which form in a craniocaudal sequence.Somites differentiate into the:Sclerotome: Cartilage and bone componentMyotome: Muscle componentDermatome: Dermis of skin componentTongue muscles are derived from occipital myotomes. The tongue muscles are innervated by CN XII.Extraocular muscles are derived from somitomeres 1-3 and 5. Somitomeres 1-3 are called preotic myotomes. The extraocular muscles are innervated by cranial nerve (CN) III, CN IV, and CN VI.Head and neck musculature is derived from somitomeres 1-7 of the head and neck region, which participate in the formation of the pharyngeal arches.