Key Cells And Landmarks Of The Gingiva: Macrophages & Free Gingival Groove

Key Cells And Landmarks Of The Gingiva: Macrophages & Free Gingival Groove

Question 1. Macrophages.
Answer:

It is cell,present in the lamina propria. n It is a stellate or fusiform cell.

Histology:

• Smaller and denser nuclei
• Less granular endoplasmic reticulum.
• The cytoplasm contains lysosomes and phagocytic vesicles.

Functions:

• Ingest damaged tissue or foreign material.
• Process it and present it to the lymphocytes.
• Stimulates fibroblast proliferation necessary for repair.

Question 2. Free gingival groove.
Answer:

• It is a dividing line between the free gingiva and the attached gingiva.
• It runs parallel to the margin of the gingiva.
• It is seen as a V-shaped shallow notch.
• It develops at or apical to the bottom of the gingival sulcus.
• Its base is formed by the superior end of the junctional epithelium.
• It is bound on one side by the tooth surface and on the other side by the sulcular epithelium.