Which of following does not lie on the mandible:
**Core Concept**
The mandible, also known as the jawbone, is a long, U-shaped bone in the lower jaw that contains the lower teeth and forms the lower jaw. Various muscles, nerves, and blood vessels are attached to the mandible.
**Why the Correct Answer is Right**
The correct answer will be an anatomical structure that does not originate from the mandible. This might involve identifying a nerve, artery, or muscle that has its origin elsewhere in the head or neck.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because the inferior alveolar nerve is a branch of the mandibular division of the trigeminal nerve (V3) that runs through the mandible, innervating the lower teeth.
* **Option B:** This option is incorrect because the mylohyoid muscle, which is involved in tongue elevation and swallowing, originates from the mylohyoid groove of the mandible.
* **Option C:** This option is incorrect because the masseter muscle, which is involved in jaw closure, originates from the zygomatic arch and inserts into the mandible.
**Clinical Pearl / High-Yield Fact**
The mandible is the only bone in the human body that has a distinct, separate process for the muscles of mastication (chewing), including the masseter, temporalis, and medial pterygoid muscles.
**Correct Answer: D. Submandibular gland**