Histologically, the tonsil has the following features: 1. It is lined by stratified squamous non-keratinized epithelium that dips into the underlying tissues to form crypts. 2. There are lymphatic nodules on the sides of the crypts with prominent germinal centers and mantle zones. 3. There are also mucous glands present and an incomplete connective tissue capsule.

1. Histology of Tonsil
V.S.Rashmi Priyem
ULTRA’S BEST Dental Science
College

3. Histologically,
1. Its Oral Surface is lined by Stratified Squamous
Non-keratinized Epithelium, which Dips into
Underlying Tissues to Form Crypts
2. Presence of Lymphatic Nodules on the Sides of
the Crypts, Many with Prominent:
a. Germinal Centres
b. Mantle Zones (Corona)
3. Presence of Mucous Glands
4. Incomplete Connective Tissue Capsule

5. Function
• Immune Function at the Entrance of the
Oropharynx
• 1. Form the Protective Mucosal Lining
• 2. Increase Surface Area for Contact between the
Oropharyngeal Content and the Immune Cells
• 3. Separate Tonsils from underlying Connective
Tissue and Wall Them off in the Event of
Infection

6. Palatine Tonsil

7. Pharyngeal Tonsil

8. Lingual Tonsil

9. Location
• Either Side of the Oropharynx between
Palatopharyngeal and Palatoglossal Arches
• 1. Pharyngeal Surface of the Tonsil
• 2. Extend into Tonsillar Parenchyma
• 3. Between the Tonsil and underlying Connective
Tissue
• 4. Throughout Tonsillar Parenchyma

10. Palatoglossal and Palatopharyngeal
Arches

12. Clinical Significance
• Tonsillitis:
• Inflammation of the Tonsils as the result of
Bacterial or Viral Infection.
• Red, swollen palatine tonsils with Purulent
Exudates (Pus) are easily observed when the
patient opens the mouth and the tongue is
depressed.
• Patients present with sore throat, pain, fever, and
dysphagia.
• In severe cases, the infection may extend to involve
the pharynx, larynx, and auditory tube.