Which nerve originates from medulla :

Options

A. Optic
B. Occulomotor
C. Vagus
D. Trigeminal

Answer

To determine which nerve originates from the medulla, we can analyze the options provided step by step.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks which nerve originates from the medulla oblongata. The medulla is part of the brainstem and is responsible for various autonomic functions.

2. **Evaluate the Options**:
- **Option 1: Optic Nerve**
- The optic nerve is formed from the axons of retinal ganglion cells. It does not originate from the medulla; instead, it arises from the retina and passes through the optic chiasm. Therefore, this option is incorrect.

- **Option 2: Oculomotor Nerve**
- The oculomotor nerve originates from the oculomotor nucleus located in the midbrain, not the medulla. Thus, this option is also incorrect.

- **Option 3: Vagus Nerve**
- The vagus nerve (Cranial Nerve X) exits from the medulla oblongata. It travels down into the neck and thorax, and it is indeed known to originate from the medulla. This option is correct.

- **Option 4: Trigeminal Nerve**
- The trigeminal nerve has its origins in three sensory nuclei, which include the mesencephalic, principal sensory, and spinal nuclei. While it has connections to the medulla, it does not originate from it. Therefore, this option is incorrect.

3. **Conclusion**: Based on the analysis of each option, the nerve that originates from the medulla oblongata is the **Vagus Nerve**.

### Final Answer:
The nerve that originates from the medulla is the **Vagus Nerve**.