Otolaryngology Book

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Larynx Anatomy

Aka: Larynx Anatomy, Laryngeal Anatomy, Larynx, Vocal Cords
  1. See Also
    1. Head and Neck Anatomy
    2. Vocal Cords
    3. Vascular Anatomy of the Head and Neck
  2. Physiology
    1. Sounds are generated by Larynx when air us forced through Vocal Cords that are partially closed
    2. Sound is further modified by lip, Tongue and Soft Palate
  3. Anatomy: Three levels of Larynx (from base of Tongue, down to trachea)
    1. Supraglottis (Tongue base to above true Vocal Cords)
      1. Protected by Hyoid Bone, Thyroid cartilage
      2. Contains epiglottis, false Vocal Cords, arytenoids
    2. Glottis (true Vocal Cords to 1 cm below)
      1. Protected by Thyroid cartilage
      2. Contains true Vocal Cords
    3. Subglottis (below true Vocal Cords to cricoid cartilage)
      1. Protected by cricoid cartilage
  4. Anatomy: General
    1. Nerve innervation (branches of Vagus Nerve)
      1. Superior laryngeal nerve
        1. Internal branch (enters supraglottis between hyoid and Thyroid cartilages)
        2. External branch (enters glottis laterally via cricothyroid membrane)
      2. Recurrent laryngeal nerve (inferior laryngeal nerve) innervates glottis through cricothyroid membrane
        1. Right - ascends along aortic arch
        2. Left - ascends along subclavian artery
    2. Muscles
      1. Intrinsic muscles
        1. Fine vocal cord movement for phonation/voice
        2. Recurrent Laryngeal Nerve innervates all except cricothyroid muscles
      2. Extrinsic muscles
        1. Raise and lower Larynx in neck
  5. Anatomy: Images
    1. General
      1. entLarynxAnteriorGrayBB951.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
      2. entLarynxPosteriorGrayBB952.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
      3. entLarynxLateralXsGrayBB953.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
      4. entLarynxAnteriorXsGrayBB954.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
      5. entLarynxSuperiorGrayBB955.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
    2. Cartilage
      1. entLarynxCartilageGrayBB950.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
    3. Muscles
      1. entLarynxMusclesGrayBB957.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
      2. entLarynxPosteriorMusclesGrayBB958.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
      3. entLarynxLateralMusclesGrayBB959.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
    4. Vocal Cords
      1. entLarynxSuperiorVocalCordsGrayBB956.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
      2. entLarynxSuperiorVocalCordsGrayBB1204.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
      3. entLarynxVocalCordsMusclesGrayBB960.gifLewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)

Laryngeal Diseases (C0023051)

Definition (MSH) Pathological processes involving any part of the LARYNX which coordinates many functions such as voice production, breathing, swallowing, and coughing.
Definition (MSHCZE) Patologické procesy v jakékoli části hrtanu (LARYNX), který koordinuje mnoho funkcí jako např. hlas, dýchání, polykání a kašel.
Definition (NCI) A non-neoplastic or neoplastic disorder that affects the larynx. Representative examples include laryngitis, vocal cord polyp, squamous papilloma, and carcinoma.
Definition (CSP) condition in which there is a deviation from or interruption of the normal structure or function of the larynx.
Concepts Disease or Syndrome (T047)
MSH D007818
ICD9 478.70
ICD10 S12.8, J38.7
SnomedCT 60600009, 195863001
English Disease, Laryngeal, Diseases, Laryngeal, Diseases, Larynx, Laryngeal Diseases, Larynx Disease, Larynx Diseases, Unspecified disease of larynx, larynx disorder, Disease, Larynx, Disease of larynx unspecified, LARYNGEAL DIS, LARYNX DIS, Disease of the larynx, disorder of larynx, disorder of larynx (diagnosis), Laryngeal disorder NOS, Larynx, Disease of larynx NOS, Laryngeal Diseases [Disease/Finding], disease larynx, laryngeal diseases, diseases larynx, disease of the larynx, laryngeal disorders, larynx diseases, disorders larynx, Disease of larynx unspecified (disorder), Larynx--Diseases, Laryngeal disorder, Disorder of larynx, Disease of larynx, disease (or disorder); larynx, larynx; disease, Disease of the larynx, NOS, Disease of the larynx (disorder), Disorder of the larynx (disorder), Disorder of the larynx, Laryngeal Disorders, Laryngeal Disease, Laryngeal Disorder, laryngeal disease, laryngeal disorder
Italian Affezione della laringe, Malattie della laringe non specificate, Affezione della laringe NAS, Malattie laringee, Malattie della laringe
Dutch niet-gespecificeerde ziekte van de larynx, larynxaandoening NAO, aandoening; larynx, larynx; aandoening, larynxaandoening, Larynxziekte, Larynxziekten, Ziekte, larynx-, Ziekten, larynx-
French Trouble laryngé SAI, Maladie non précisée du larynx, Trouble laryngé, Maladies du larynx, Maladies laryngées
German Affektion des Kehlkopfes NNB, nicht naeher bezeichnete Erkrankung der Larynx, Erkrankung des Kehlkopfes, Larynxkrankheiten, Kehlkopfkrankheiten
Portuguese Doença NE da laringe, Afecção laríngea NE, Laringopatias, Afecção laríngea, Doenças da Laringe
Spanish Enfermedad no especificada de la laringe, Trastorno laríngeo NEOM, enfermedad de la laringe (trastorno), enfermedad de laringe, no especificada (trastorno), enfermedad de laringe, no especificada, Trastorno laríngeo, trastorno de la laringe (trastorno), trastorno de la laringe, enfermedad de la laringe, Enfermedades de la Laringe
Japanese 喉頭障害NOS, 詳細不明の喉頭疾患, 喉頭障害, コウトウショウガイ, ショウサイフメイノコウトウシッカン, コウトウショウガイNOS, 喉頭疾患, 喉頭軟骨炎, 喉頭軟骨膜炎
Swedish Struphuvudsjukdomar
Finnish Kurkunpään sairaudet
Russian GORTANI PERIKHONDRIT, GORTANI BOLEZNI, ГОРТАНИ БОЛЕЗНИ, ГОРТАНИ ПЕРИХОНДРИТ
Czech Onemocnění laryngu blíže neurčené, Laryngeální porucha, Laryngeální porucha NOS, larynx - nemoci, nemoci laryngu, nemoci hrtanu
Croatian GRKLJAN, BOLESTI, LARINGEALNE BOLESTI, BOLESTI GRKLJANA
Polish Choroby krtani, Zapalenie ochrzęstnej krtani
Hungarian Gége nem meghatározott betegsége, Gége betegség, Gége betegség k.m.n.
Norwegian Larynxsykdommer, Strupesykdommer
Sources
Derived from the NIH UMLS (Unified Medical Language System)


Vocal cord structure (C0042930)

Definition (MSH) A pair of cone-shaped elastic mucous membrane projecting from the laryngeal wall and forming a narrow slit between them. Each contains a thickened free edge (vocal ligament) extending from the THYROID CARTILAGE to the ARYTENOID CARTILAGE, and a VOCAL MUSCLE that shortens or relaxes the vocal cord to control sound production.
Definition (NCI_CDISC) A pair of small bands of muscle that stretch from the thyroid cartilage in front to the arytenoid cartilage in back of the larynx. The vocal cords help prevent food entering the lungs and produce sound through vibration. (NCI)
Definition (NCI_NCI-GLOSS) One of two small bands of muscle within the larynx that vibrates to produce the voice.
Definition (NCI) A pair of small bands of muscle that stretch from the thyroid cartilage in front to the arytenoid cartilage in back of the larynx. The vocal cords help prevent food entering the lungs and produce sound through vibration.
Definition (CSP) fold of mucous membrane covering the vocalis muscle in the larynx.
Concepts Body Part, Organ, or Organ Component (T023)
MSH D014827
SnomedCT 46105003
HL7 VOC
English Cord, Vocal, Cords, Vocal, Fold, Vocal, Folds, Vocal, Vocal Cords, Vocal Fold, vocal fold, Plica vocalis, Vocal Folds, Vocal folds, cord vocal, cords vocal, fold vocal, true vocal cord, vocal cord, vocal folds, cords true vocal, folds vocal, vocal cords, Vocal cords, VOCAL CORD, Vocal cord, True cord, True vocal cord, Vocal fold, Vocal cord structure (body structure), Vocal cord structure, Vocal cord, NOS, Vocal fold, NOS, Vocal Cord, True Vocal Cord
French Pli vocal, Plis vocaux, Cordes vocales, Corde vocale, Pli vocal du larynx
Swedish Stämband
Czech plica vocalis, hlasová řasa, hlasové řasy, řasa hlasová
Finnish Äänihuulet
Russian GOLOSOVYE SVIAZKI, GOLOSOVAIA SKLADKA, ГОЛОСОВАЯ СКЛАДКА, ГОЛОСОВЫЕ СВЯЗКИ
Japanese 声帯, 声帯ひだ, 声帯ヒダ
Portuguese Pregas Vocais, Cordas Vocais, Prega Vocal, Ligamentos Vocais
Spanish Pliegues Vocales, Cuerdas Vocales, Pliegue Vocal, Ligamentos Vocales, cuerda verdadera, cuerda vocal verdadera, cuerda vocal, estructura de la cuerda vocal (estructura corporal), estructura de la cuerda vocal, Cuerda Vocal Verdadera
Croatian GLASNICE
Polish Struna głosowa, Więzadło głosowe
Norwegian Plica vocalis, Plicae vocales, Stemmebåndfold, Stemmebånd, Stemmebåndfolder
German Stimmlippe, Stimmbänder
Italian Corde vocali
Dutch Stemband, Stembanden
Sources
Derived from the NIH UMLS (Unified Medical Language System)


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