Origin of maxillary artery
**Core Concept**
The maxillary artery is a major branch of the external carotid artery, supplying blood to the face and maxillary region. It is a terminal branch of the external carotid artery, arising from its terminal bifurcation. The maxillary artery is a crucial artery in the head and neck region, providing blood supply to the maxillary sinus, nasal cavity, and surrounding structures.
**Why the Correct Answer is Right**
The maxillary artery originates from the external carotid artery, specifically from its terminal bifurcation into the maxillary artery and the superficial temporal artery. This bifurcation occurs at the level of the neck, below the angle of the mandible. The maxillary artery then descends through the neck, passing through the parotid gland and the infratemporal fossa, before entering the pterygopalatine fossa. The maxillary artery gives off several important branches, including the deep auricular, middle meningeal, and inferior alveolar arteries.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided.
* **Option B:** This option is incorrect because the maxillary artery does not originate from the internal carotid artery, which is a terminal branch of the common carotid artery that supplies the anterior part of the brain.
* **Option C:** This option is incorrect because the maxillary artery does not originate from the superficial temporal artery, which is a terminal branch of the external carotid artery that supplies the scalp and face.
* **Option D:** This option is incorrect because the maxillary artery does not originate from the lingual artery, which is a branch of the external carotid artery that supplies the tongue.
**Clinical Pearl / High-Yield Fact**
The maxillary artery is a common site for bleeding in cases of head and neck trauma, particularly in patients with fractures of the maxilla or zygoma. Identification of the maxillary artery's origin is essential in surgical procedures involving the face and neck region.
**Correct Answer:** . Maxillary artery.