Anatomy study note · Head and neck

Lateral cricoarytenoid

An intrinsic laryngeal muscle that adducts the vocal cords.

Key points

• Cricoid → arytenoid muscular process.
• Adducts the cords.
• Recurrent laryngeal.
• From the fourth and sixth pharyngeal arch → vagus.
• Skeletal muscle: multinucleated, peripheral nuclei, striated.
• Epimysium → perimysium → endomysium.

The full note in the atlas also covers

Origin · Insertion · Action · Nerve supply · Histology · Development

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Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 12, PDF pp. 1785–1788
• Inderbir Singh’s Human Embryology, ch. 9, PDF pp. 120, 122, 125
• BRS Cell Biology & Histology, 7th ed., ch. 8, PDF pp. 135–144

More from the head and neck

• 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
• Maxillary artery

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