Histology Flashcards
What type of epithelium lines the Oral Cavity?
Stratified squamous epithelium
What are the three different covered surfaces of the lips?
Internal mucous surface
Red vermilion zone
Outer surface
True or False? The Red vermillion zone of the lips is lined by non-keratinized epithelium?
FALSE!!! It is lined by very thin keratinized stratified squamous epithelium.
What type of epithelium covers the Internal mucous surface?
Thick non-keratinized epithelium.
Which covered surface of the lips does not contain salivary or sweat glands?
Red vermillion zone
What are the 4 types of Lingual papillae?
Filiform papillae
Fungiform papillae
Foliate papillae
Vallate papillae
What is the largest papillae ?
Vallate (Circumvalate ) papillae
What type of glands are found that empty into deep groove surrounding each vallate papilla providing continuous flow of fluid
over taste buds?
von Ebner glands
What type of glands are von Ebner glands?
Serous salivary glands
What type of epithelium are found in taste buds?
Stratified epithelium
What structure separates the anterior 2/3 of the tongue from the posterior 1/3 of the tongue?
Sulcus terminalis
What are the first set of teeth to grow in the human body?
Lower incisors
At what age does your third molar develop?
17-25 years
What types of papillae are NOT present on the posterior 1/3 of the tongue?
Filiform or Fungiform papillae
What number of teeth are present in each quadrant of the mouth and what is its order?
8 teeth
2 incisors
1 canine
2 premolars
3 molars
2-1-2-3
What is the name of the depression in which teeth grow into?
Dental Alveolus
Fill in the blanks? . Blood vessels and nerves enter the tooth through_________ at the root tips.
Apical Foramina
What is the name of the structure that holds the tooth to the bone of the jaw?
Periodontal ligament
What type pf nerves are present in the pulp cavity of the tooth?
Unmyelinated nerves
What is the main component contains in Dentin?
Hydroxyapatite
What type of collagen is found in the organic matrix of Dentin?
Type I collagen
What are Odontoblasts derived from?
Cranial neural crest cells in mesenchyme of developing pulp cavity (PC)
How long does it take for pre-dentin to mineralize to become dentin?
1 day
True or False? The enamel contains both Type I and Type II collagen?
FALSE!! The enamel does not contain any collagen