This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oral Cavity & Tongue, Subject name: Anatomy
Occipital myotome gives - 
Select and explain. 
A. Muscle of mastication, B. Tongue muscles, C. Facial muscles, D. Laryngeal muscles
B: Tongue muscles
Answer: B: Tongue muscles 
Explanation: Ans. is 'b' i.e., Tongue muscles Development of muscels of head regiono Muscles of the head region are derived from following mesodermal masses.Head myotoniesPharyngeal archesHead mvotomeso There are four occipital myotomeso One of these, the first completely disappears and the other three give rise to -1. Tongue muscles arise from hypoaxial division of these three occipital myotomes.2. Extraoculor muscles are thought to be derived from three pairs of anterior (pre-otic) head myotomes .pharyngeal arch muscleso The muscles derived from pharyngeal arch mesoderm are -1. Muscles of mastication2 Muscles of facial expression3. Muscles of pharynx4. Muscles of larynx