## **Core Concept**
The intrinsic muscles of the tongue are responsible for changing its shape and are crucial for functions like speech and swallowing. These muscles are derived from the **occipital somites**, also known as the somites of the occipital region.

## **Why the Correct Answer is Right**
The intrinsic muscles of the tongue, along with some extrinsic muscles, originate from the occipital somites. These somites give rise to the muscles that are innervated by the **hypoglossal nerve (CN XII)**, which controls the movements of the tongue. The development of the tongue muscles from occipital somites highlights the embryological origin of these structures.

## **Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not specify the correct embryological origin.
* **Option B:** This option is incorrect as it does not accurately represent the origin of the intrinsic tongue muscles.
* **Option C:** This option is incorrect because, although it might seem plausible, it does not correctly identify the source of the intrinsic tongue muscles.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the **hypoglossal nerve (CN XII)** innervates all the intrinsic and most of the extrinsic muscles of the tongue, which is essential for diagnosing and managing conditions affecting tongue movement.

## **Correct Answer:** D. Occipital somites.