Digestive System I: Tongue, Teeth, and Esophagus

Flashcards about the tongue, teeth, and esophagus

Keratinized stratified squamous epithelium

Highly keratinized tissue that covers the dorsal surface of the feline tongue.

Filiform papilla

Pointed structures on the dorsal surface of the feline tongue.

Taste buds

Structures in the surface epithelium of the fungiform papilla that are responsible for taste.

Vallate papilla

Large circular papillae with a flattened surface and surrounded by a deep circular groove.

Serous gland

Glands found near vallate papillae that secrete into the surrounding groove.

Mucous gland

Glands found near vallate papillae that secrete directly to the lingual surface.

Taste pore

A small aperture which provides access for chemicals to the taste receptor cells.

Enamel organ

The proliferation of oral epithelium into the underlying mesenchyme during tooth development.

Dental papilla

The mass of mesenchyme caught inside the enamel organ.

Ameloblasts

Cells differentiated from the inner enamel epithelium that lay down a thin layer of enamel.

Odontoblasts

Columnar cells of the dental papilla adjacent to the ameloblasts that lay down a layer of dentin.

Predentin

Unmineralized dentin.

Tunica mucosa, Tunica submucosa, Tunica muscularis, Tunica fibrosa/serosa

The four layers of the wall of the esophagus.

Lamina propria

The layer of connective tissue beneath the stratified squamous epithelium in the tunica mucosa.

Muscularis mucosae

The outer layer of the mucosa composed of longitudinally arranged bundles of smooth muscle.

Myenteric ganglion-plexus

Ganglion plexus found between the inner circular and outer longitudinal layers of the tunica muscularis

Esophageal gland

Mucous glands found in the submucosa of the canine esophagus.

Crop

A diverticulum of the esophagus.