Name a cranial nerve that controls eye ball movements. Is this nerve a sensory, a motor or a mixed nerve?

Explanation

**Step-by-Step Solution:**

1. **Identify the cranial nerve responsible for eye ball movements.**
The cranial nerve that controls eye ball movements is the **abducens nerve**.

2. **Determine the type of nerve.**
The abducens nerve is classified as a **motor nerve** because it innervates the lateral rectus muscle, which is responsible for moving the eye.

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