Question 1

Two ameloblast cells form the enamel rod

Accepted Answer

A)  head. 
B)  neck. 
C)  body. 
D)  tail. 
A)  head. 
B)  neck. 
C)  body. 
D)  tail.

Question 2

Lamellae are cracks in the surface of enamel and are visible to the naked eye.

Accepted Answer

A) True 
 B)False

Question 3

Enamel rods extend perpendicular to the dentoenamel junction,but curve slightly toward the cusp tip.

Accepted Answer

A) True 
 B)False

Question 4

Which part of the enamel rod is most sensitive to demineralization?

Accepted Answer

A)  Tail 
B)  Core 
C)  Head 
D)  Sheath 
A)  Tail 
B)  Core 
C)  Head 
D)  Sheath

Question 5

Ameloblasts produce _______ as they migrate.

Accepted Answer

A)  cementoid 
B)  enamel rods 
C)  epithelial rests 
D)  dentinal tubules 
A)  cementoid 
B)  enamel rods 
C)  epithelial rests 
D)  dentinal tubules

Question 6

The organic component of enamel is called

Accepted Answer

A)  hydroxyapatite. 
B)  enamelin. 
C)  gnarled enamel. 
D)  perikymata. 
A)  hydroxyapatite. 
B)  enamelin. 
C)  gnarled enamel. 
D)  perikymata.

Question 7

Enamel rods extend from the dentinoenamel junction to the enamel outer surface.

Accepted Answer

A) True 
 B)False

Question 8

Enamel is approximately ______ thick at the occlusal or incisal surface.

Accepted Answer

A)  1 µm 
B)  9 µm 
C)  2.5 mm 
D)  4.5 mm 
A)  1 µm 
B)  9 µm 
C)  2.5 mm 
D)  4.5 mm

Question 9

In the Hunter-Schreger phenomenon,adjacent rod groups lie at right angles to each other.

Accepted Answer

A) True 
 B)False

Question 10

A developmental defect at the dentinoenamel junction of enamel that is filled with organic material is called (a/an)

Accepted Answer

A)  enamel rod. 
B)  enamel tuft. 
C)  enamel lamellae. 
D)  enamel spindle. 
A)  enamel rod. 
B)  enamel tuft. 
C)  enamel lamellae. 
D)  enamel spindle.

Question 11

Which of the following does not facilitate the spread of dental caries?

Accepted Answer

A)  Enamel tufts 
B)  Enamel lamellae 
C)  Incremental lines 
D)  Prismless enamel 
A)  Enamel tufts 
B)  Enamel lamellae 
C)  Incremental lines 
D)  Prismless enamel

Question 12

Ameloblasts travel along parallel paths to produce straight enamel rods.

Accepted Answer

A) True 
 B)False

Two ameloblast cells form the enamel rod

Lamellae are cracks in the surface of enamel and are visible to the naked eye.

Enamel rods extend perpendicular to the dentoenamel junction,but curve slightly toward the cusp tip.

Which part of the enamel rod is most sensitive to demineralization?

Ameloblasts produce _______ as they migrate.

The organic component of enamel is called

Enamel rods extend from the dentinoenamel junction to the enamel outer surface.

Enamel is approximately ______ thick at the occlusal or incisal surface.

In the Hunter-Schreger phenomenon,adjacent rod groups lie at right angles to each other.

A developmental defect at the dentinoenamel junction of enamel that is filled with organic material is called (a/an)

Which of the following does not facilitate the spread of dental caries?

Ameloblasts travel along parallel paths to produce straight enamel rods.

Development and Structure of Cells and Tissues

Structure and Function of Cells, tissues, and Organs

Development of the Oral Facial Region

Development of the Face and Palate

Development of Teeth

Eruption and Shedding of Teeth

Dentin

Dental Pulp

Cementum

Periodontium: Periodontal Ligament

Periodontium: Alveolar Process and Cementum

Temporomandibular Joint

Oral Mucosa

Salivary Glands and Tonsils

Biofilms

Filters

Exam 7: Enamel

Two ameloblast cells form the enamel rod

Lamellae are cracks in the surface of enamel and are visible to the naked eye.

Enamel rods extend perpendicular to the dentoenamel junction,but curve slightly toward the cusp tip.

Which part of the enamel rod is most sensitive to demineralization?

Ameloblasts produce _______ as they migrate.

The organic component of enamel is called

Enamel rods extend from the dentinoenamel junction to the enamel outer surface.

Enamel is approximately ______ thick at the occlusal or incisal surface.

In the Hunter-Schreger phenomenon,adjacent rod groups lie at right angles to each other.

A developmental defect at the dentinoenamel junction of enamel that is filled with organic material is called (a/an)

Which of the following does not facilitate the spread of dental caries?

Ameloblasts travel along parallel paths to produce straight enamel rods.

Development and Structure of Cells and Tissues

Structure and Function of Cells, tissues, and Organs

Development of the Oral Facial Region

Development of the Face and Palate

Development of Teeth

Eruption and Shedding of Teeth

Dentin

Dental Pulp

Cementum

Periodontium: Periodontal Ligament

Periodontium: Alveolar Process and Cementum

Temporomandibular Joint

Oral Mucosa

Salivary Glands and Tonsils

Biofilms

Filters