1 / 28

Larynx --------------------------------------------

Larynx --------------------------------------------. Functions: 1- Respiratory duct 2- Swallowing 3- Phonation. Position: C 3 - C 6 Hyoid : C 3 Thyroid : C 4 , C 5 Cricoid : C 6. Relations --------------------------------------------------. Ant.: Infrahyoid mm.

ringo
Download Presentation

Larynx --------------------------------------------

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Larynx-------------------------------------------- Functions: 1- Respiratory duct 2- Swallowing 3- Phonation

  2. Position: C3 - C6 Hyoid : C3 Thyroid : C4 , C5 Cricoid : C6

  3. Relations-------------------------------------------------- Ant.: Infrahyoid mm. Thyroid lobes Post.: Pharynx Lat.: Carotid sheath

  4. Structure of Larynx----------------------------------------------------------------------------------------------------------------------------- 1- Cartilages 2- Joints 3- Ligaments and Membranes 4- Muscles 5- Vessels 6- Nerves

  5. Cartilages : ------------------------------------------ Single: 1-Thyroid 2-Epiglottis 3-Cricoid Pair: 1-Arytenoid 2-Corniculate 3-Cuneiform

  6. Joints---------------------------------------------------------------------------Joints--------------------------------------------------------------------------- 1- Cricothyroid joint Synovial Transverse axis 2- Cricoarytenoid joint Synovial Rotation - Gliding 3- Arycorniculate joint Cartilaginous

  7. Ligaments and Membranes------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Extrinsic: 1- Thyrohyoid membrane 2- Hyoepiglottic lig. 3- Thyroepiglottic lig. 4- Cricotracheal lig. Intrinsic: 1- Quadrangular membrane a- Aryepiglottic fold b- Vestibular lig. 2- Cricothyroid membrane a- Conus elasticus b- Cricothyroid lig. c- Vocal lig.

  8. Muscles------------------------------------------------------------------Muscles------------------------------------------------------------------ Extrinsic: 1-Infrahyoid mm. 2- Inf. pharyngeal constrictor m. 3- Stylopharyngeus m. 4- Palatopharyngeus m. Intrinsic: 1- Cricothyroid m. 2- Post. Cricoarytenoid m. 3- Lat. Cricoarytenoid m. 4- Transverse arytenoid m. 5- Oblique arytenoid m. 6- Aryepiglottic m. 7- Thyroarytenoid m. 8- Thyroepiglottic m. 9- Vocalis m.

  9. Function of muscles Tension : Cricothyroid m. Dilatation : Post. Cricoarytenoid m. Clossing or narrowing : Lat. Cricoarytenoid m. Sphinctric action : others mm.

  10. Vocal fold & Vestibular fold

  11. Quiet respiration

  12. Forced inspiration

  13. Phonation

  14. Effort closure

  15. Swallowing

  16. Sex differences Longitudinal diameter: 44 mm 36 mmTransverse diameter: 43 mm 41 mm Sagittaldiameter: 36 mm 26 mm Rima glottidis: 23 mm 17 mm Male Female

  17. Sup. Thyroid a. Sup. Laryngeal a. Inf. Thyroid a. Inf. Laryngeal a.

  18. Nerves 1- Sup. Laryngeal n. - Ext. br. Cricothyroid m. - Int. br. Mucosa in the sup. part of vocal fold 2- Inf. Laryngeal n. (Recurrent laryngeal n.) - Laryngeal mm. except Cricothyroid m. - Mucosa in the inf. part of vocal fold

  19. Tracheotomy

More Related