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The Larynx (Anatomy of the Neck)

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Dr. Sherif Fahmy

The document summarizes the anatomy of the larynx. It describes the cartilages that make up the skeleton of the larynx including the thyroid, cricoid, epiglottis, arytenoid, corniculate and cuneiform cartilages. It details the ligaments and membranes, as well as the muscles of the larynx including the cricothyroid muscle. Finally, it briefly discusses the nerve and blood supply to the larynx and mentions the procedure of tracheostomy.

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

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