Oral Cavity Robert Scranton© 2008. The Tissues Lining Mucosa Masticatory Mucosa  NKSS (nonkeratinized stratified squamous)  Lamina Propria- loose CT.

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Presentation transcript:

Oral Cavity Robert Scranton© 2008

The Tissues Lining Mucosa Masticatory Mucosa  NKSS (nonkeratinized stratified squamous)  Lamina Propria- loose CT w/ collagen bundles  Mucous and serous glands  Fordyce Spots  Location?  KSS/PKSS (keratinized/parakeratinized stratified squamous)  Variable Lamina Propria  Location?

Lining Mucosa Don’t forget the soft palate

Diagrams are important

Identify: vermillion zone Hair follicle Epithelium, what type? Skeletal muscle what is the name?

Special Mucosa  Filiform  Most abundant  Dorsal surface  Fungiform  Occasional tasebuds, CN-VII  Vallate  8-12 along sulcus terminalis  Crypt  Serous glands of Von Ebner  CN- IX, taste buds  Foliate  Dorsolateral surfaces, taste buds?

Identify filiform and fungiform

Vallate/ circumvallate

Teeth  We origionally have __ baby (________) teeth. Adults have ___ teeth.  What are the three cell types that form the teeth and what parts do they form?  What do dentin and enamel have in common?  Which is acellular? 20 deciduous 32 Mesenchymal CT  pulp cavity Odontoblasts (mesenchyme)  Dentin ameloblasts (ectoderm)  Enamel Avascular Ca 2+ Hydroxyapatite (calcified organic Matrix Enamel

Teeth  The little tubules in the teeth, what is their story?  Damage to What three things can lead to loss of a tooth? Dentinal tubules- the tubule that the cytoplasmic process of odontoblasts extend through for nociception Canaliculi- the tubules that cementocytes use to maintain cementum Bony Socket Peridontal ligament Cementum

Identify: Alveolar Bone Free Gingiva Attached Gingiva Alveolar Mucosa Gingival Ligament Gingival Sulcus

Identify: Alveolar Bone Dentin Peridontal ligament Pulp Cavity Gingiva

Identify: Odontoblasts Predentin Dentin Cementocytes Peridontal Ligament

Salivary Glands Intrinsic Extrinsic  AKA minor  Serous  Mucous  Mixed  Means w/in lamina propria  AKA Major  Serous  Serousmucous  Outside oral cavity  Has large ducts

Gold

Important words  Serous  amylase  Serous demilunes  bacteriolytic lysozyme  IgA  bacteriostatic, resistant to degradation  Nasopharynx  Respiratory Epithelium  Oropharynx  lining mucosa, NKSS  Laryngopharynx  transitional zone so KSS, NKSS