Three-dimensional and surface structures of rat filiform papillae

Area of Science:

• Histology
• Scanning Electron Microscopy
• Oral Biology

Background:

• The tongue's surface morphology is crucial for its functions.
• Simple conical papillae are prominent structures on the rat tongue.

Purpose of the Study:

• To elucidate the three-dimensional and surface structures of rat tongue's simple conical papillae.
• To analyze the cellular organization and surface differentiation of these papillae.

Main Methods:

• Scanning electron microscopy was employed.
• Detailed observation of papillary projection and basal regions.

Main Results:

• Papillary projection organized into anterior, posterior, and central core cell populations.
• Anterior cells exhibited smoother, more keratinized surfaces compared to posterior cells.
• Surface structures like microridges and micropits are proposed to facilitate cell adhesion.

Conclusions:

• Rat tongue papillae exhibit distinct cellular organization and surface characteristics.
• Surface differentiations suggest varying degrees of keratinization and roles in cell adhesion.