Which gland is traversed by the facial nerve within its substance?

Prepare for the Individual Readiness Assurance Test (iRAT) 4 in Head and Neck. Study with multiple-choice questions, comprehensive explanations, and detailed flashcards. Maximize your chances of success with thorough preparation and insightful study resources.

The key idea is the facial nerve’s path through the parotid gland. After it exits the skull, the facial nerve enters the parotid gland and travels within its substance, where it divides into its main branches that innervate all the muscles of facial expression. This intraglandular course is specific to the parotid among the glands listed, while the submandibular, sublingual, and thyroid glands are not traversed by the nerve. Clinically, this relationship explains why procedures involving the parotid carry a risk of facial nerve injury and why parotid tumors can affect facial movement.