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17 Cards in this Set
- Front
- Back
What are the main features of the Larynx?
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Epiglottis
Aryglottis folds Vestibular Folds Vocal Folds Cricoid Cartilage |
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Location of the Larynx
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1. Muscular Triangle
2. C3-C6 3. Anterior to pharynx |
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Mucosa of Larynx
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1. Supraglottic space: Between inlet and vestibular folds
2. Ventricle: Between vestibular folds and auditory folds 3. Infraglottic Space: Between auditory folds and cricoid cartilage 4. Glottis: Inlcudes both true vocal cords and the rima glottis |
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What are the defining features of the larynx
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Clockwise
Epiglottis Vestibular Fold Ventricle Vocal Fold Rima glottis Corniculate Cartilage Cuneiform Cartilage |
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What are the major cartilages of the larynx, how many of each are there?
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Top-->Bottom
Hyoid Bone-1 Epiglottic cartilage-1 Thyroid cartilage -1 Corniculate cartilage-2 Arytenoid cartilage-2 Cricoid cartilage 1 Cueiform cartilage-located in arepiglottic folds |
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Laryngeal Membranes
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1. Thyrohyoid Membrane: binds hyoid bone to superior edge of thyroid cartilage
2. Cricothyroid Membrane: median and lateral cricothyroid ligaments. Binds cricoid and thyroid cartilages and helps form the conus elastus 3. Quadrangular Membrane: extends b/w epigolltic and arytenoid cartilages. Inferior margin forms vestibular ligament |
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Conus Elastus
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1. Made up of: median cricothyroid ligament, lateral cricothyroid ligament and vocal ligaments
connecting cricoid cartilage with vocal ligaments and forms roof of infraglottic space |
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What membranes are these?
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thyrohyoid
Cricothyroid |
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Quadrangular membrane
Vestibular ligament |
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Clockwise
Thyroid Cartilage Median Cricothyroid ligament Cricoid Cartilage Vocal ligament Lateral triangluar cricothyroid ligament Corniculate cartilage Arytenoid cartilage |
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Epiglottis
Aryepiglottic m. Thyroarytenoid m Oblique arytenoid m Transverse arytenoid m Lateral cricoarytenoid m. Posterior cricoarytenoid m. cricothyroid m. |
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Laryngeal Muscles
Fxn Innervation |
Adductors: :Lateral cricoarytenoid, Oblique Arytenoid, Transverse arytenoid
Abductors: posterior cricoarytenoid Relaxation: vocalis, thyroarytenoid Tension: cricothyroid All recurrent laryngeal except cricothyroid(external laryngeal) |
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Superior Laryngeal Nerve Branches and fxnional componenets
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1. Internal Laryngeal: VE/Para Pre, VA to mucus glands and mucosa above vocal folds
2. External Laryngeal: BM(11 via 10) to cricothyroid |
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Recurrent Laryngeal
Targets? Fxnal components? |
BM 11 via 10 to muscles of larynx
VA, VE/ Para Pre to Mucosa and Mucus Glands of larynx BELOW vocal folds |
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Blood Supply to Larynx
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1. Superior Laryngeal A/V, branch of superior thyroid A/V. Accompanies internal laryngeal n. piercing the thyrohyoid membrane
2. Inferior Laryngeal A/V. Branch of inferior thyroid a/v. Accompnies reccurrent laryngeal. Slides through pharyngeal gap #4 to muscles. |
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Innervation Above Vocal Folds
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1. Internal Laryngeal(VE Para/Pre, VA)
2. Sym/Post via superior laryngeal artery |
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Innervation Below Vocal Folds
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1. Recurrent Laryngeal(BM 11 via 10, VA, VE Para/Pre)
2. Sym/Post via inferior laryngeal artery |
