Lateral Cross Section of the Male Larynx Showing the Thyrohyoid Membrane

Description

Running in the lateral neck section, the thyrohyoid membrane spans from the superior border of the thyroid cartilage to the inferior margin of the hyoid bone, forming a broad fibroelastic sheet just inferior to the epiglottis. Superior to the thyroid lamina, the membrane blends with the median and lateral thyrohyoid ligaments, while anteriorly it relates to the pre-epiglottic space and posteriorly approaches the laryngeal inlet. Deep to the infrahyoid strap muscles, the thyroid cartilage sits anterior to the laryngeal cavity, with the cricoid cartilage positioned inferiorly as the complete ring above the first tracheal rings. A key landmark. Clinical work in the supraglottic larynx often depends on this membrane because the internal branch of the superior laryngeal nerve and the superior laryngeal vessels pierce it to reach the laryngeal mucosa. That relationship explains the target and the risk profile of a superior laryngeal nerve block performed for awake intubation, microlaryngoscopy, or endoscopic biopsies, and it also frames how penetrating trauma near the thyrohyoid interval can produce sensory loss above the vocal folds with impaired cough reflex. For oncologic teaching, this is also the route by which supraglottic tumors may spread toward the pre-epiglottic space. Use this lateral cross section in head and neck anatomy courses to teach layered relationships from strap muscles to laryngeal framework, and in anesthesiology or ENT training materials to map safe needle trajectory and avoid vascular puncture at the thyrohyoid membrane. Medical publishers will also find it well suited for chapters on laryngeal innervation, supraglottic airway anatomy, and interpretation of sagittal CT or MRI through the laryngeal inlet. Anatomical accuracy verified by SciePro's Medical Advisory Board.