03-06-2011, 02:15 AM
A 32-year-old African-American woman with a history of sarcoidosis presents to a neurologist with a sudden onset of a unilateral inability to close the eye and decreased tearing. When she wrinkles her forehead or smiles, the affected side of her face remains relaxed.The muscles involved in this condition are derived from which of the following embryologic structures?The muscles involved in this condition are derived from which of the following embryologic structures?
A... FIRST BRACHIAL ARCH
B... SECOND BRACHIAL ARCH
C.... THIRD BRACHIAL ARCH
D.... FOURTH BRACHIAL ARCH
E... THYROGLOSSAL DUCT
A... FIRST BRACHIAL ARCH
B... SECOND BRACHIAL ARCH
C.... THIRD BRACHIAL ARCH
D.... FOURTH BRACHIAL ARCH
E... THYROGLOSSAL DUCT