Under The Light Microscopic View
For the identification of these papillae on a histological slide:
- Circumvallate Papillae:
- Look for larger papillae with a circular groove, often located at the back of the tongue.
- Stratified sqoumous non-keratinized epithelium, Taste buds and furrow can be seen
- Serous secretory acini and skeletal muscles.
- Foliate Papillae:
- Identify leaf-like folds or ridges on the sides of the tongue. Stratified squamous non-keratinized epithelium, mucosal ridges
- Mucous acini and skeletal muscles
- Filiform Papillae:
- Locate smaller, thread-like projections covering the anterior two-thirds of the tongue
- Stratified Squamous Non-keratinized epithelium, lamina propria,
Circumvallate Papillae:
- Location:
- Located at the back of the tongue, arranged in a V-shaped row.
- Structure:
- Larger, dome-shaped papillae surrounded by a circular groove.
- Taste Buds:
- Numerous taste buds are present in the epithelium lining the walls of the papillae.
- Function:
- Involved in taste sensation.
Foliate Papillae:
- Location:
- Found on the sides of the tongue, towards the back.
- Structure:
- Leaf-like folds or ridges.
- Taste Buds:
- Taste buds are present in the epithelium lining the papillae.
- Function:
- Involved in taste sensation, especially to sour tastes.
Filiform Papillae:
- Location:
- Cover the anterior two-thirds of the tongue.
- Structure:
- Thread-like projections without taste buds.
- Surface:
- Provide a rough texture to the tongue.
- Function:
- Assist in mechanical functions such as providing friction for food manipulation and cleaning the tongue.
Note: histological slide, it's essential to use a microscope and pay attention to the cellular structures, layers, and arrangements in the epithelium and connective tissue associated with each type of papilla.
Written By: IkrambaigTech
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