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Multiple Choice
Which of the following cranial nerves is not involved with the eye?
A
Abducens nerve (CN VI)
B
Vagus nerve (CN X)
C
Oculomotor nerve (CN III)
D
Trochlear nerve (CN IV)
Verified step by step guidance
1
Identify the cranial nerves listed in the problem: Abducens nerve (CN VI), Vagus nerve (CN X), Oculomotor nerve (CN III), and Trochlear nerve (CN IV).
Understand the primary functions of each cranial nerve: CN III (Oculomotor) controls most of the eye's movements, CN IV (Trochlear) controls the superior oblique muscle of the eye, and CN VI (Abducens) controls the lateral rectus muscle of the eye.
Recognize that CN X (Vagus nerve) is primarily involved in parasympathetic control of the heart, lungs, and digestive tract, and is not associated with eye movement or function.
Compare the functions of each nerve to determine which one is not involved with the eye.
Conclude that the Vagus nerve (CN X) is the cranial nerve not involved with the eye, as it does not contribute to eye movement or function.