Chapter 2 Flashcards
True or false
The tongue as a whole is a good indicator of a person’s overall health
True
True or false
Tongue is covered with stratified squamous epithelium
True
Lower surface
Thin epithelium
Ventral
Thick epithelium
Upper surface
Dorsal
4 types of papillae
Circumvallate
Fungiform
Filiform
Foliate
V-shaped row
13 elevations
Under a microscope, they rest in troughs
Circumvallate papillae
Anterior 2/3 of tongue
Tiny, round, red
Taste buds in these papillae
ONLY on upper portion of tongue
Fungiform papillae
Remainder anterior 2/3 of tongue
Slender , pointed prohections
No taste buds
Tactile sensation
Filiform papillae
The region near the midline on the dorsum, just behind the circumvallate papillae at the base of tongue
Lingual tonsils
Lateral side close to vallate papillae
Few taste buds
Foliate papillae
Crown is covered by
Enamel
Root is covered with
Cementum
The line formed by the junction of the cementum and the enamel is called
Cervical line or CEJ
Moving of the tooth through its surrounding tissue so that the clinical crown gradually appears longer
Eruption
Division of a root into 2 segments
Bifurcation
Division of a root into 3 segments
Trifurcation
Between the roots
Furcal region
What are the 4 tooth tissues
Enamel
Dentin
Cementum
Dental pulp
Outer surface of the anatomic crown formed by
Hardest tissue in human body
96% inorganic matter, 4 % organic water
Enamel
Body of the tooth
Softer than enamel, harder than cementum and bone
70% inorganic matter, 30% organic matter + water
Dentin
Grows very slowly and is initiated by normal attrition and wear, normal aging process
Secondary dentin
Dentin laid down in response to carries or trauma
Reparative dentin
Provides a medium for attachment of the tooth to the alveolar bone
Covers the root in a non perfect layer
45% inorganic, 55% organic matter
Cementum
Cells that produce cementum are called
Cementoblasts
Is the union of two triangular ridges, a buccal and a lingual that cross the occlusal surface of a posterior tooth
Transverse ridge
The development line that separates this 4th lobe from the labial lobes
Lingual groves
Separates the lingual lobe the other 3 lobes
Lingual fossa
Lingual love of an anterior tooth and makes up the bulk of the cervical third of the lingual surface
Cingulum
Carved out section or area like a cave
Concavity
Bulging out
Convexity
Ridges of a tooth and a cusp tip are
Convex
The union of 2 triangular ridges, a buccal and lingual
Transverse ridges
The main ridges on each cusp that run from the tip of the cusp to the central part of the occlusal surface
Triangular ridges
Rounded borders of enamel forming the mesial and distal shoulders
Marginal ridges
Is an elevated portion of a tooth the runs in a line
Ridges
Mound on crown of tooth
Found on canines, premolars and molars
Cusps
Small pinpoint hole anywhere in enamel
Pits
Lingual lobe of maxillary anterior teeth
Cingulum
Depression or concavity on tooth
Fossa
Small elevations of enamel on some portion if the crown
Tubercles
Cut
Incisors
Hold , grasp and tear
Canines
Hold and grind (crush)
Premolars
Chew and grind
Molars
Longest teeth in the human dentintion
Canines
What are the 2 divisions of the pulp
Pulp chamber
Pulp canals
Dentin forming cells
Odontoblasts
Nourishing, sensory, dentin reparative system of tooth
Pulp
What are the 2 types of cementum?
Cellular
Acellular
What are the 3 salivary glands
Parotid
Submandibular
Sublingual
Produced 25% salivary volume
Largest of all the salivary glands
Secretes a thin, watery serious secretion
Parotid gland
Produces 60-65% saliva
Mixed gland-serious and mucous cells
Also called maxillary gland
Submandibular gland
Produces 10% of saliva
Smallest salivary gland
Anterior floor of mouth
Sublingual gland
