Difference between revisions of "Hard Palate"
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==Introduction== | ==Introduction== | ||
| − | The hard palate (palatum durum) forms the rostral roof of the oral cavity. It merges caudally with the soft palate. | + | The hard palate (palatum durum) forms the rostral roof of the oral cavity. It merges caudally with the soft palate where a connective tissue aponeurosis replaces the bone. |
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=Functional Anatomy== | =Functional Anatomy== | ||
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*Bony shelf of palatine processes of the incisive, maxillary and palatine bones. Failure of the palatine bones to fuse results in cleft palate. | *Bony shelf of palatine processes of the incisive, maxillary and palatine bones. Failure of the palatine bones to fuse results in cleft palate. | ||
| − | *6-8 fixed transverse ridges | + | *6-8 fixed transverse ridges to direct food caudally |
| + | |||
| + | *Flat | ||
| + | |||
| + | *Incisive papilla (small median swelling) behind incisive teeth | ||
| + | |||
| + | *Smaller papillae ducts branching to nasal cavity and veromeronasal organ | ||
| + | |||
==Histology== | ==Histology== | ||
| + | *Thick mucosa | ||
| + | |||
| + | *keratinised stratified squamous epithelium | ||
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| + | |||
| + | ==Species Differences== | ||
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| + | *More heavily keratinised in herbivores | ||
Revision as of 18:23, 30 June 2008
Introduction
The hard palate (palatum durum) forms the rostral roof of the oral cavity. It merges caudally with the soft palate where a connective tissue aponeurosis replaces the bone.
Functional Anatomy=
- Bony shelf of palatine processes of the incisive, maxillary and palatine bones. Failure of the palatine bones to fuse results in cleft palate.
- 6-8 fixed transverse ridges to direct food caudally
- Flat
- Incisive papilla (small median swelling) behind incisive teeth
- Smaller papillae ducts branching to nasal cavity and veromeronasal organ
Histology
- Thick mucosa
- keratinised stratified squamous epithelium
Species Differences
- More heavily keratinised in herbivores