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Old 03-09-2020
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Default Repeated USMLE Questions Step 1- 311

A 32-year-old man visits his physician for a follow up after receiving a punch to the right side of his face. He complains of difficulty to chew food on the right side. Examination reveals possible injury to muscles of mastication.
Muscles of mastication are derived form which of these structures?
A-Branchial Arch 1
B-Branchial Arch 2
C-Branchial Arch 3
D-Branchial Arch 4
E-Branchial Arch 5
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