Digestive System Part II Flashcards
Type I collagen fiber produced by cementoblasts
CEMENTUM
Covers the central pulp chamber and pulp (root) canal
DENTIN
Odontoblasts (continue to elaborate dentin for the life of the tooth)
DENTIN
Highly vascularized CT that contains odontoblasts (close to dentin), fibroblasts, mesenchymal cells, types I and III CF and afferent nerve fibers.
DENTAL PULP
DENTAL SUPPORTING STRUCTURES:
- PERIODONTAL LIGAMENT
- GINGIVAE (GUMS)
- ALVEOLAR BONE
Dense irregular collagenous connective tissue (Type I cf) arranged in 5 principal fiber bundles
PERIODONTAL LIGAMENT
PERIODONTAL LIGAMENT 5 principle bundles:
a. Alveolar Cast
b. Horizontal
c. Oblique
d. Apical
e. Interradicular
5 Principle fiber bundles of Gingivae (Gums)
a. Alveologingival
b. Dentogingival
c. Circular
d. Dentoperiosteal
e. Transseptal
Inner layer of Alveolar Bone
Compact bone (cribriform plate/ alveolar bone proper)
Outer layer of Alveolar Bone
Compact bone (cortical plate)
Cancellous Bone (Spongiosa)
Division of Tongue
- Anterior ⅔
- Posterior ⅓ (divided by sulcus terminalis)
What type of epithelial tissue is there in the Dorsal Surface of tongue?
Stratified squamous epithelium
What type of epithelial tissue is there in the Ventral Surface of tongue?
Stratified squamous nonkeratinized epithelium
from the bulk of the tongue
INTRINSIC MUSCLE
attached to bone
EXTRINSIC MUSCLE
Located on the dorsal surface of the anterior ⅔
LINGUAL PAPILLAE
TYPES OF PAILLAE
- FILIFORM PAPILLA
- FUNGIFORM PAPILLA
- FOLIATE PAPILLA
- CIRCUMVALLATE PAPILLA
Highly keratinized and lacks taste buds
FILIFORM PAPILLA
Mushroom-shaped and has occasional taste buds
FUNGIFORM PAPILLA
Shallow, longitudinal furrows, and taste buds degenerate after 2 years of life
FOLIATE PAPILLA
Possess taste buds
CIRCUMVALLATE PAPILLA
TASTE BUDS:
- TYPE I (DARK CELLS)
- TYPE II (LIGHT CELLS)
- TYPE III (INTERMEDIATE CELLS)
- TYPE IV (BASAL CELLS)