Eruption - Bell Stage Flashcards
When does the bell stage occur?
During the 11th and 12th week
Differentiation during the bell stage creates what 4 distinct cell layers?
- Outer Enamel epithelium
- Inner enamel epithelium
- Stellate Reticulum
- Stratum Intermedium
What is the cell shape that outer enamel epithelium is composed of?
Unstratified cuboidal cells
What is the cell shape that inner enamel epithelium is composed of?
Unstratified columnar cells
What do the unstratified columnar cells of the inner enamel epithelium become?
Ameloblasts
What will ameloblasts differentiate and mature into?
Enamel
What is the correct order of the stages of formation of the tooth?
- Initiation
- Bud Stage
- Cap Stage
- Bell Stage
What is the purpose of the cell membrane?
Control the environment of the cell.
What is the function of Stellate reticulum and stratum intermedium during the bell stage?
Assist in enamel formation.
What is the purpose of Glycosaminoglycans?
Draw water to cell linings.
What is the function of the desomosome junction made between the cells?
Holds cells together as water is attracted by “gags”.
What is the primary function of stratum intermedium during the bell stage?
Provides raw materials necessary to make enamel. It gets sandwiched between stellate reticulum and inner enamel epithelium.
Why is the formation of enamel tissue considered “specialized” tissue?
The number of cell linings used to make it (4).
What other structure is undergoing major differentiation during the bell stage besides enamel organ?
Dental Papilla
Where is the dental papilla located?
The other side of the basement membrane (opposite side of the enamel organ)
