ARYTENOID CARTILAGE

Arytenoid cartilage
- shape
  - pyramid shaped cartilages
    - apex
      - curved posteromedially
      - articulates with corniculate cartilage
    - base
      - concave
      - articulates with
        
        lateral part of upper border of cricoid lamina
      - prolonged anteriorly to form
        
        vocal process
        
        vocal fold is attached here
        
        vocalis muscle also attaches
        
        Above vocal process
        
        vestibular fold is attached
      - prolonged laterally to form
        
        muscular process
        
        posterior aspect gives insertion to
        
        posterior cricoarytenoid
        
        anterior aspect gives insertion to
        
        lateral cricoarytenoid
  - surfaces
    - anterolateral
    - medial
    - posterior
      - transverse arytenoid across two cartilages
  - between base and apex
    - oblique arytenoid
      - continues as aryepiglottic muscle in to two sides of epiglottis
- situation
  - lies on upper border of
    - lamina of cricoid cartilage