Which of the following statements about the facial artery is incorrect?

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It is the primary supplier of oxygenated blood to the palatine tonsil.It originates from the internal carotid artery.It gives off branches that supply both the upper and lower lips.It carries postganglionic sympathetic fibers to the submandibular gland.It travels superficial to the mandible before ascending towards the face.

Explanation

The facial artery arises from the external carotid artery, not the internal carotid artery. It provides oxygenated blood to the palatine tonsil, supplies branches to the upper and lower lips, and carries postganglionic sympathetic nerve fibers to the submandibular gland.