Untitled Flashcard Set
Tongue & Taste Buds
Q: What are the 4 types of lingual papillae?
A: Filiform, Fungiform, Circumvallate, Foliate
Q: Which papillae do NOT contain taste buds?
A: Filiform
Q: Which papillae contain taste buds?
A: Fungiform, Foliate, Circumvallate
Q: Which papillae are most common?
A: Filiform
Q: Where are circumvallate papillae located?
A: Posterior tongue in a V-shape
Q: Where are foliate papillae located?
A: Lateral tongue
Q: Where are fungiform papillae located?
A: Scattered on anterior tongue
Q: Where are filiform papillae located?
A: Anterior dorsal tongue
Q: How many cells are in a taste bud?
A: ~30–80 cells
Q: Turnover time of taste buds?
A: ~10 days
Oral Mucosa
Q: What are the 3 types of oral mucosa?
A: Lining, Masticatory, Specialized
Q: What type of epithelium is lining mucosa?
A: Non-keratinized stratified squamous
Q: Where is lining mucosa found?
A: Buccal, labial, alveolar mucosa, floor of mouth, ventral tongue, soft palate
Q: What type of epithelium is masticatory mucosa?
A: Keratinized (orthokeratinized)
Q: Where is masticatory mucosa found?
A: Hard palate, attached gingiva
Q: What describes masticatory mucosa?
A: Rubbery, resistant
Q: Where is specialized mucosa found?
A: Dorsal tongue
Epithelium Layers
Q: Layers of non-keratinized epithelium (superficial → deep)?
A: Superficial → Intermediate → Basal
Q: Layers of orthokeratinized epithelium?
A: Corneum → Granulosum → Spinosum → Basale
Q: Key difference: keratinized vs non-keratinized?
A:
Keratinized → no nuclei at surface
Non-keratinized → nuclei present
Cells & Tissue
Q: Most common cell in connective tissue (lamina propria)?
A: Fibroblast
Q: What is lamina propria?
A: Connective tissue of oral mucosa
Turnover Times
Q: Fastest turnover in oral tissues?
A: Junctional epithelium (4–6 days)
Q: Turnover time of hard palate?
A: ~10–12 days
Gingiva & Bone
Q: Gingival phenotypes?
A: Thin and thick
Q: Thickness of thin gingiva?
A: ~1.5 mm
Q: Thickness of thick gingiva?
A: ~2 mm
Periodontium
Q: What is the periodontium?
A: Supporting structures of teeth (gingiva, PDL, cementum, alveolar bone)
Cementum
Q: Cementum is derived from?
A: Dental sac (follicle)
Q: Where is cementum thinnest?
A: Cervical region (CEJ)
Q: Where is cementum thickest?
A: Apex and furcation
Q: 3 CEJ relationships?
A:
Cementum overlaps enamel
Edge-to-edge
Gap (dentin exposed)
Development
Q: Maxilla and mandible develop from?
A: 1st pharyngeal (branchial) arch
Growth
Q: Mandibular growth center?
A: Condyle
Alveolar Bone
Q: Where is alveolar crest located relative to CEJ?
A: 1.5–2 mm apical
Q: Where is bone loss first seen in periodontitis?
A: Alveolar crest (most coronal portion)
High-Yield “Easy to Miss”
Q: Which mucosa is non-keratinized?
A: Lining mucosa
Q: Which mucosa is keratinized?
A: Masticatory mucosa
Q: Which mucosa contains taste buds?
A: Specialized mucosa