Anatomy study note · Head and neck

Levator palpebrae superioris

The muscle that raises the upper eyelid and so opens the eye.

Key points

• Opens the eye (raises the upper lid).
• CN III + sympathetic (superior tarsal muscle).
• Palsy → ptosis.
• Absent LPS → congenital ptosis.
• Oculomotor muscles: somitomeres 1–2.
• Skeletal muscle: multinucleated, peripheral nuclei, striated.
• Epimysium → perimysium → endomysium.

The full note in the atlas also covers

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

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Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 12, PDF pp. 1569–1575, 1684, 1697
• Inderbir Singh’s Human Embryology, ch. 7, PDF p. 109; ch. 9, PDF p. 126; ch. 19, PDF p. 361
• BRS Cell Biology & Histology, 7th ed., ch. 8, PDF pp. 135–144

More from the head and neck

• Levator veli palatini
• Lips and oral cavity
• Longus colli and longus capitis
• Mandible
• Mandibular nerve
• Masseter
• Maxilla
• Maxillary artery
• Maxillary nerve
• Medial pterygoid
• Medial rectus
• Medulla oblongata

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