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Mnemonics, Simplified Concepts & Thoughts

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Mnemonics, Simplified Concepts & Thoughts

Paranasal sinus drainage in Nasal cavity : Mnemonic

Epomedicine, Aug 4, 2023Aug 4, 2023

Lateral wall of nasal cavity has:

  1. Conchae or turbinates: shelf like projections
  2. Meatus: air space inferior to each concha
paranasal sinus drainage

Mnemonic: SPIN

1. Superior meatus: Posterior ethmoidal sinus

2. Inferior meatus: Nasolacrimal duct

The sphenoidal sinus drains into spheno-ethmoidal recess (superior to superior concha).

All others drain into middle meatus:

Mnemonic: AM/FM

  1. Anterior ethmoidal sinus
  2. Middle ethmoidal sinus
  3. Frontal sinus
  4. Maxillary sinus
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PGMEE, MRCS, USMLE, MBBS, MD/MS AnatomyOtorhinolaryngology

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Epomedicine. Paranasal sinus drainage in Nasal cavity : Mnemonic [Internet]. Epomedicine; 2023 Aug 4 [cited 2026 May 11]. Available from: https://epomedicine.com/medical-students/paranasal-sinus-drainage-in-nasal-cavity-mnemonic/.

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