THYROID CARTILAGE

Thyroid cartilage
- Y shaped in section
Parts
- Position
  - Oblique relative to midline
- Right and left lamina
  - Quadrilateral
  - Each lamina
    - Anterior border
      - Lower parts
        
        Fuse to form laryngeal prominence
        
        Adams apple
      - Upper parts.
        
        Do not meet
        
        Thyroid notch
    - Posterior border
      - Free
      - Prolonged upward and downward
      - Cornua or horns
        
        Superior cornua
        
        Connected to greater cornua of hyoid bone
        
        By thyrohyoid ligament
        
        Inferior cornua
        
        Articulates with cricoid cartilage
        
        Cricothyroid joint
    - Inferior border
      - In median plane connected to cricoid cartilage
        
        Conus elasticus
    - Surfaces
      - Outer surface
        
        Oblique line
        
        Thyrohyoid , sternothyroid , thyrophsryngeus
- Attachments
  - Inferior cornua and lower border
    - Triangular cricothyroid
  - Posterior border
    - Connecting superior and inferior cornua
    - Palatopharyngeus
    - Salpingopharyngeus
    - Stylopharyngeus
- Inner aspect
  - Thyroepiglottic
    - Ligament ( median )
    - Muscle on each side
  - Vestibular fold on each side
  - Vocal fold on each side
  - Thyroarytenoid
  - Vocalis muscle on each side