the larynx and hypopharynx - educational symposia · netter, atlas of human anatomy aryepiglottic...
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![Page 1: The Larynx and Hypopharynx - Educational Symposia · Netter, Atlas of Human Anatomy Aryepiglottic Folds • Sweep downward and posteriorly from epiglottis to the arytenoid • Pyriform](https://reader031.vdocuments.us/reader031/viewer/2022013020/5e600ba1feec55343e69b2c4/html5/thumbnails/1.jpg)
TheLarynxandHypopharynx
MariHagiwara,MDASHNR2018
Larynx
• Phonation• Maintenanceofairway• Protectionagainstaspiration
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Netter, Atlas of Human Anatomy
• Thyroidcartilage• Cricoidcartilage• Arytenoidcartilages
Cartilaginous Framework
Netter, Atlas of Human Anatomy
Epiglottis
• Teardropshapefibrocartilage
• Tapersinferiorlytopetiole
• Extremelyflexible• ProtectsAWagainstaspiration
Netter, Atlas of Human Anatomy
AryepiglotticFolds
• Sweep downward and posteriorly from epiglottis to the arytenoid • Pyriform sinus along lateral surface of each AE fold
L
H
Netter, Atlas of Human Anatomy
TrueCords:vocalligamentandthyroarytenoidmuscle
Netter, Atlas of Human Anatomy http://www.usm.maine.edu/bio/courses/bio205/larynx_coronal.GIF
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Regions
• Supraglottis• Glottis• Subglottis
Som PM and Curtin HD. Head and Neck Imaging, 4th ed.
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Supraglottis
• Fromtipofepiglottistoventricle
• Epiglottis,AEfolds,falsecords,pre-epiglotticandparaglotticspaces,upperarytenoidcartilages
• Robustlymphaticdrainagetohighdeepcervicalchain
My.statdx.com
Glottis
• Truevocalcords– Vocalligament– Thyroarytenoidmuscle
• Anteriorandposteriorcommissures(<1mm)
• Sparselymphaticdrainage
Bodterms.weebly.com
Subglottis
• FromundersurfaceofTVCtoinferiormarginofcricoidcartilage
• Mucosalsurfacecloselyappliedtocricoidcartilage
Som PM and Curtin HD. Head and Neck Imaging, 4th ed.
Preepiglotticspace
• Anteriortoepiglottis• Filledwithfat,richlymphaticandmicrovascularnetwork
• Contiguousoneithersidewithparaglotticspace
PES
Paraglotticspace
• Lateralwalloflarynx,betweenmucosaandcartilages
• Supraglottis:fat• Glottis:TAM
• InferiorlyterminatesatlevelofundersurfaceofTAM
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G
Som PM and Curtin HD. Head and Neck Imaging, 4th ed.
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PES
LH
TAM
Hypopharynx
Netter, Atlas of Human Anatomy
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Hypopharynx
Netter, Atlas of Human Anatomy
Hypopharynx
Posterior hypopharyngeal wall
Pyriform sinuses
Post cricoid region