Unit 7 Flashcards
Where is the masticatory mucosa found
Gingiva
Hard palate
What type of epithelium covers the masticatory mucosa
Keratinized or parakeratinized stratified squamous epithelium
What is special about the superficial cells of parakeratinized stratified squamous epithelium
They keep their nuclei
What are the two parts of the lamina propria of the oral mucosa
Papillary layer
Reticular layer
Which layer of the lamina propria has blood vessels nerves and sensory receptors
Papillary layer
Which layer of the lamina propria is made of dense connective tissue
Reticular layer
What special sense organ is found in the papillary layer of the lamina propria
Meissner’s corpuscles
Where is the lining mucosa or the oral mucosa found
Soft palate Underside of tongue Floor of mouth Cheeks Lips
What type of surface epithelium lines the lining mucosa
Nonkeratinized stratified squamous
Occasionally Parakeratinized stratified squamous epithelium
What type of surface epithelium covers the vermillion border
Keratinized stratified squamous epithelium
What type of CT makes up the Lamina propria of the
Lining mucosa
What type of mucosa is found on Filiform papillae
Keratinized stratified squamous
What type of epithelium covers all the papillae (except filiform)
Stratified squamous
What is the function of the papillae
Move food
Taste
What part of the tongue has a thicker mucosa
Dorsal part
What are the different types of papillae
Filiform
Fungiform
Foliate
Vallate
What type of papillae is associated with small salivary glands
Vallate
What do the small glands associated with Vallate papillae do
Produce serous fluid to cleanse taste buds on papillae
What papillae do not have taste buds
Filiform
What type of CT make of the lamina propria of the tongue
Loose CT
Possibly adipose
What is contained on the submucosa on the tongue
Lingual salivary glands
What is the function of the intrinsic muscles of the tongue
Change the shape of the tongue
What are the layers of a tooth prior to eruption
Ameloblasts Enamel Dentin Predentin Odontoblasts Dental papilla
What layer of the tooth is a layer of polarized Columnar cells
Ameloblasts
What is the function of Ameloblasts
Produce enamel prior to eruption
What layer of the tooth is the hardest substance in the body
Enamel
Can we make more enamel after a tooth erupts
No
What cells make dentin
Odontoblasts
What is the precursor to dentin
Predentin
What layer of the tooth is a layer of columnar cells lining the pulp cavity
Odontoblasts
What layer of the tooth repairs and produces dentin
Odontoblasts
Which layer of the tooth contains blood vessels and nerves
Dental papilla
What salivary gland is the largest
Parotid
What percent of saliva is produced by the parotid gland
30%
Which salivary gland is most affected by mumps
Parotid gland
What percent of the fluid produced by the parotid gland is serous
100%
What products are produced by the parotid glad
Salivary amylase
Lysosyma
IgA
What percent of saliva is produced by the Submandibular gland
60%
What is the general composition of the saliva produced by the submandibular gland
20% mucus
80% serous
What type of mucus does the submandibular gland produce
Red
what special serous cell is found in the submandibular gland
Serous Demilumes
What is the smallest Salivary gland
Sublingual gland
What percent of salivary output is produced by Sublingual gland
5%
What percent of the saliva produced by the sublingual gland is mucus
80%
20% serous
What type of mucus is produced by the sublingual gland
White mucus
All serous produced from the sublingual gland come from what cell
Serous Demilumes
What direction does the muscle in the muscularis mucosae run
Longitudinal
What is the name of the nerve plexus found in the submucosa
Meissner plexus (submucosal plexus)
What type of plexus is found in the muscularis externa
Myenteric (Auerbrach) plexus
What is the fiber orientation of the muscularis externa
Inner circular
Outer longitudinal
What is the function of the esophagus
Trasnfer the bolus to stomach from oropharynx
what type of epithelium lines the mucosa of the Esophagus
Stratified squamous
What special cells are found int eh surface epithelium of the mucosa
Langerhans cells
What glands are found in the lamina propria of the esophagus
Esophageal cardiac glands
What is the function of the esophageal cardiac glands
Produce Neutral mucus to prevent epithelial damage
What type of muscle is found in the muscularis middle 1/3 of the esophagus
Miscute of smooth and skeletal muscle
Esophageal properglands are found in which layer of the esophagus
Submucosa
What are the two regions of the lamina propria that contain Esophageal cardiac glands
Near pharynx (sometimes) Near stomach (always)
What part of the esophagus has a thin musculars mucosae
Distally (by pharynx)
What part of the esophagus has a thick muscularis mucosae
Proximally (by stomach)
What is the function of the Esophageal proper glands
Produce slightly acidic mucus to lubricate food
Parasympathetic innervation to the digestive system come from which nerve
Vagus
What does parasympathetic stimulation to the digestive system do
Stimulate peristalsis
inhibit sphincters
Activate secretions
What nerve provides sympathetic innervation to the digestive system
Splanchnic nerves
What does sympathetic stimulation of the digestive system do
Inhibit peristalsis
Contraction of sphincters
Restrict blood flow to gut