Download - The Larynx (Anatomy of the Neck)
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Larynx(Page 142)
Dr.Sherif Fahmy
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Skeleton of larynxA- Cartilages:
1- Single: Thyroid, cricoid and epiglottis.
2- Paired: Arytenoid, corniculate and cuneiform.
B- Membranes: Thyrohyoid, cricothyroid, cricotracheal and quadrangular. Dr.Sherif Fahmy
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Thyroid cartilageDr.Sherif Fahmy
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Thyroid cartilage
Cricoid cartilage
Quadrilateral lamina
Laryngeal prominence (Adam’s apple)
Hyoid bone
Dr.Sherif Fahmy
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Laryngeal prominence
Thyroid notchSuperior horn
Inferior horn
Oblique line
Thyoid cartilage Quadrilateral plate of cartilage
Dr.Sherif Fahmy
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Cricoid CartilageDr.Sherif Fahmy
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Cricoid cartilage
Anterior arch
Posterior quadrate lamina
Articulation with inferior horn of thyroid cartilage
Site for arytenoid
Crico-tracheal ligament
Dr.Sherif Fahmy
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EpiglottisDr.Sherif Fahmy
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Epiglottis
Stalk
Right thyroid lamina
Thyroepiglottic lig.Dr.Sherif Fahmy
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Epiglottis
Thyroid cartilage
Arytenoid cartilage
Posterior quadrate cricoid cartilage
Thyro-epiglottic lig.
Posterior concave smooth surface
Posterior aspect
Dr.Sherif Fahmy
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Arytenoid cartilageThyroid cartilage (cut)
Quadrangular membrane
Epiglottis
Thyro-epiglottic lig.
Upper border
Lower border
Cricoid cartilageCrico-thyroid membrane
Dr.Sherif Fahmy
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Thyroid cartilage (cut)
Thyro-epiglottic lig.
Hyoid boneHyo-epiglottic lig.
Vestibular fold
Arytenoid cartilage
Ary-epiglottic fold
Epiglottis
Quadrangular membrane
Dr.Sherif Fahmy
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Oral part
Pharyngeal partMedian glosso-
epiglottic lig.
Lateral glosso-epiglottic folds
Epiglottis
Dr.Sherif Fahmy
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Arytenoid CartilagesDr.Sherif Fahmy
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Arytenoid cartilageApex
Base
Vocal process
Muscular process
Cricoid cartilage
Muscular process
Dr.Sherif Fahmy
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Cricoid cartilage
Arytenoid cartilage
Vocal process
Vocal cord
Posterior quadrate lamina
Muscular processes
Dr.Sherif Fahmy
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Corniculate & Cuneiform Cartilages
Dr.Sherif Fahmy
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Cricoid cartilage (cut)
Arytenoid cartilageThyroid cartilage (cut)
Quadrangular membrane
Corniculate cartilage
Cuneiform cartilage
Epiglottis
Dr.Sherif Fahmy
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Ligaments, Membranes & Folds
Dr.Sherif Fahmy
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1- Thyro-hyoid Memrane
Dr.Sherif Fahmy
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Thyroid cartilage
Hyoid bone
Median thyrohyoid lig.
Lateral thin part
Perforation for passage of int. laryngeal n. and sup. Laryngeal art.
Lateral thyrohyoid lig.
Dr.Sherif Fahmy
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2- Ligaments & folds attached to epiglottis
Dr.Sherif Fahmy
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Arytenoid cartilageThyroid cartilage (cut)
Quadrangular membrane
Epiglottis
Thyro-epiglottic lig.
Upper border
Lower border
Dr.Sherif Fahmy
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Thyroid cartilage (cut)
Thyro-epiglottic lig.
Epiglottis
Hyoid boneHyo-epiglottic lig.
Vestibular fold
Arytenoid cartilage
Ary-epiglottic fold
Quadrangular membrane covered with mucus membrane
Dr.Sherif Fahmy
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Pharyngeal partMedian glosso-
epiglottic lig.
Lateral glosso-epiglottic folds
Epiglottis
Dr.Sherif Fahmy
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3- Ligaments attached to Cricoid cartilage
Dr.Sherif Fahmy
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Ligaments attached to Cricoid cartilage
Crico-tracheal ligament
1st tracheal ring
Cricoid cartilage
Dr.Sherif Fahmy
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Crico-thyroid lig.
Crico-vocal lig.
Cricoid cartilage
Thyroid cartilage
Dr.Sherif Fahmy
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Cricoid cartilage (cut)
Vocal process
Crico-vocal lig.
Cricothyroid lig.
Thyroid cartilage (cut)
Arytenoid cartilage
Vocal cord
Sagittal section of skeleton of larynx
Dr.Sherif Fahmy
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Cavity of Larynx(Page 148)
Dr.Sherif Fahmy
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Vestibular fold
Arytenoid cartilage
Ary-epiglottic fold Vestibule
Sinus
Infraglottic part
Cavity of larynx
Vocal fold
Epiglottis
Sagittal section
Dr.Sherif Fahmy
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Vestibule
Infra-glottic part
Sinus
Cavity of LarynxEpiglottis
Ary-epiglottic fold
Vestibular fold
Vocal fold
Coronal section
Saccule
Dr.Sherif Fahmy
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Inlet of Larynx
Dr.Sherif Fahmy
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Posterior view
Posterior wall of pharynx (Cut)
Piriform recess
Inlet of larynx
Pathway of food during swallowing Dr.Sherif Fahmy
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Upper border of epiglottis
Ary-epiglottic fold
Inter-arytenoid fold
Cuneiform cartilage
Corniculate cartilage
Inlet of larynx
Dr.Sherif Fahmy
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Ary-epiglottic fold
Vestibular fold
Vocal foldSinus of larynx
Thyroid cartilage (cut)
Dr.Sherif Fahmy
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Muscles of LarynxDr.Sherif Fahmy
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Crico-thyroid m.
Dr.Sherif Fahmy
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Epiglottis
Thyroid cartilage
Arytenoid cartilage
Posterior aspect
Transverse arytenoid
Oblique arytenoid m.
Ary-epiglottic m.
Posterior crico-arytenoid m.
Cricoid cartilage
Dr.Sherif Fahmy
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Cricoid cartilage
Arytenoid cartilage
Vocal cord
Muscular processes
Lateral crico-arytenoid m.
Vocalis m.
Dr.Sherif Fahmy
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Posterior crico-arytenoid m. Lateral crico-
arytenoid
Transverse arytenoid
Oblique arytenoid
Vocalis m.
Arytenoid cartilage
Cricoid cartilage
Thyroid cartilage
Dr.Sherif Fahmy
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Lateral crico-arytenoid m.
Posterior crico-arytenoid m.
Thyro-arytenoid m.
Thyro-epiglottic m.
Ary-epiglottic m.
Dr.Sherif Fahmy
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Superior view
Arytenoid
Vocal lig
Vocalis m.
Thyro-arytenoid m.
Dr.Sherif Fahmy
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Quiet respiration
Deep inspiration
Dr.Sherif Fahmy
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Abduction of vocal cord
Adduction of vocal cords
Closure of rima glottidis
Dr.Sherif Fahmy
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Nerve Supply1- Superior laryngeal Nerve.2- Recurrent laryngeal Nerve.
Dr.Sherif Fahmy
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Blood Supply1- Superior laryngeal artery.2- Inferior laryngeal artery.
Dr.Sherif Fahmy
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Applied AnatomyTracheostomy: A hole which is done in trachea or crico-thyroid membrane in case of laryngeal obstruction.
Dr.Sherif Fahmy