Describe the anatomical course of the facial nerve (CN VII) from its origin in the brainstem to its terminal branches in the face. Describe the trigeminal nerve (CN V), including its three major divisions and the sensory territories supplied by each division. Explain the anatomical pathway of the optic nerve (CN II), including the optic chiasm and optic tract. What fibers cross at the optic chiasm? Describe the anatomical components and functions of the oculomotor nerve (CN III), including its motor and parasympathetic pathways. Describe the glossopharyngeal nerve (CN IX), including its major sensory, motor, and parasympathetic functions and the structures it supplies. Explain the anatomical course of the vagus nerve (CN X) from the brainstem through the neck and thorax into the abdomen, and describe its major branches and target organs.