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Histology > Amelogenesis > Flashcards

Amelogenesis Flashcards

1
Q

Epithelial Enamel/Dental Organ consists of

A

Inner Enamel Epithelium
Outer Enamel Epithelium
Stellate Reticulum
Stratum Intermedium

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2
Q

DEJ is the area between ______ and ________

A

IEE

CT of Dental Papilla

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3
Q

_____ is necessary for enamel formation and secretes alkaline phosphatase

A

Stratum Intermedium

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4
Q

Stratum Intermedium is found between ______ and _________

A

IEE

Stellate Reticulum

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5
Q

Cells of Stellate Reticulum are connected via ______ to each other as well as to cells of

A

Desmosomes

OEE and Stratum Intermedium

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6
Q

The 6 stages of Ameloblast differentiation are

A 
Morphogenic
Organizing
Formative
Maturation
Protective
Desmolytic
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7
Q

Blood vessels will begin to indent the ______ for future nourishment to ameloblasts

A

Outer Enamel Epithelium

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8
Q

______ will differentiate into ameloblasts

A

Inner Enamel Epithelium

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9
Q

The IEE contains large amounts of

A

Alkaline phosphatase and glycogen

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10
Q

Cells of the cervical loop will help to form

A

Hertwig’s Epithelial Root Sheath

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11
Q

The ______ stage of Ameloblasts will help determine the shape of DEJ and crown via _____ and ______ cells

A

Morphogenic

IEE and Dental Papilla

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12
Q

The IEE is separated from the Dental Papilla by a ______ during the Morphogenic Stage of Ameloblasts

A

Basal Lamina

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13
Q

During the _______ stage of Ameloblasts the IEE will react with dental papilla cells, inducing formation of _________

A

Organizing

Odontoblasts

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14
Q

During the Organizing stage of Ameloblasts the shape of the cells will become

A

columnar

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15
Q

During the Organizing stage of Ameloblasts the cell free zone will now be occupied by

A

Columnar Odontoblasts

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16
Q

Predentin formation occurs in which stage of Ameloblasts

A

Organizing

17
Q

As dentin formation continues it will increase vascular supply to _______ and interrupt vascular supply to _____

A

Stellate Reticulum

Ameloblasts

18
Q

The reduced enamel epithelium is formed by

A

OEE
Stratum Intermedium
Stellate Reticululm
Ameloblasts

19
Q

The _______ collapsing signals the formation of reduced enamel epithelium

A

Stellate Reticulum

20
Q

Ameloblasts enter the ______ stage after the first layer of dentin has been formed

A

Formative

21
Q

During _______ stage, ameloblasts develop blunt processes that penetrate the basal lamina and deposit ______

A

Formative

Inorganic cyrstals and enamel matrix proteins

22
Q

After the first deposition of enamel, ameloblasts will pull away from ______ and form projections called _______

A

Dentin

Tomes’ Processes

23
Q

During ______ stage secretion of enamel will occur at tip of Tomes’ Processes via _____ method

A

Formative

Merocrine

24
Q

During the _______ stage, full mineralization will begin after enamel has been laid down on occlusal surface

A

Maturation

25
Q

During the the Maturation stage the ameloblasts will become shorter and form ________ which replaces ______

A 
ruffled border (microvilli)
Tomes' Processes
26
Q

The ruffled border and smooth border of ameloblasts will alternate between ______ and _______

A

Absorption of Enamel Proteins

Secretion of Minerals

27
Q

During the Maturation stage of Ameloblats rapid influx of ____ occurs to replace _______

A

Ca+ and P+ ions

Organic Matrix and H20

28
Q

During the Protective stage microvilli are removed causing ameloblats to ______ between cell and enamel surface

A

Secrete thick Basal Lamina (Epithelial Attachement)

29
Q

After completion of enamel formation and calcification ameloblasts resemble OEE and Stratum Intermedium, forming _______

A

Reduced Enamel Epithelium

30
Q

The Reduced Enamel Epithelium functions to ______

A

Protect enamel from deposition of cementum

31
Q

During the Desmolytic Stage ________

A

Reduced enamel epithelium proliferates and induces atrophy of CT, separating it from oral epithelium

Histology (16 decks)

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