Anatomy study note · Head and neck

Larynx

The organ of voice and protective sphincter at the inlet of the airway, at the level of C4–C6, between the laryngopharynx above and the trachea below.

Key points

• C4–C6; 9 cartilages.
• True vocal folds white; false folds pink.
• Recurrent laryngeal: all muscles except cricothyroid (external laryngeal).
• Internal laryngeal: sensation above the cords.
• Larynx: cranial respiratory diverticulum.
• Cartilages: 4th–6th arches; epiglottis: hypobranchial eminence.
• Vocal fold: stratified squamous epithelium; below it, respiratory epithelium.

The full note in the atlas also covers

Features · Action · Nerve supply · Histology · Development

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Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 12, PDF pp. 1777–1792
• Inderbir Singh’s Human Embryology, ch. 14, PDF pp. 208, 210
• BRS Cell Biology & Histology, 7th ed., ch. 15, PDF pp. 270–271

More from the head and neck

• Lateral cricoarytenoid
• Lateral pterygoid
• Lateral rectus
• Lens
• Levator palpebrae superioris
• Levator veli palatini
• Lips and oral cavity
• Longus colli and longus capitis
• Mandible
• Mandibular nerve
• Masseter
• Maxilla

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