Final answer:
The cranial nerves can be categorized into sensory, motor, or both. A mnemonic can help remember their functions.
Step-by-step explanation:
The cranial nerves can be categorized into three groups: sensory, motor, or both. A popular mnemonic to remember the function of each nerve is the sentence, 'Some Say Marry Money But My Brother Says Brains Beauty Matter More.' The first, second, and eighth nerves are purely sensory, while the eye-movement nerves are purely motor. The remaining nerves contain both sensory and motor fibers. For example, the trigeminal and facial nerves both concern the face, with one focusing on sensations and the other on muscle movements.