From WikiLectures

The meaning of the word 'tonsil' means a mass of lymphoid tissue. The tonsils surround the oral cavity, providing it with protection against pathogens that may enter the mouth.

Nasal/Pharyngeal Tonsil[edit | edit source]

  • It is the midline of the roof of the nasopharynx
  • It protrudes from behind the choanae
  • It has shallow foldings between sagitally-orientated mucosal folds
  • It is visible when the tongue is depressed

Lingual Tonsil[edit | edit source]

  • It is on the posterior third of the tongue
  • It is abundant with lymphoid nodules, which contain B-lymphocytes
  • It is flat with numerous crypts

Palatine Tonsil[edit | edit source]

  • It is on each side of the oropharynx; between the palatoglossal and palatopharyngeal arches
  • It has crypts and tonsillar pits

Waldeyer's Circle[edit | edit source]

  • Also known as 'Waldeyer's Ring'
  • It is the lymphatic gate made of all three tonsils

Links[edit | edit source]

Bibliography[edit | edit source]

SNELL, Richard S. Clinical Anatomy by Regions. 8th Edition edition. 2004. ISBN 978-0-7817-6404-9.