Quiz Questions

Question 1

T/F: during termination of amelogenesis the initial Dentogingival junction forms. Why?

Answer 1

True. 

Question 2

T/F the epithelial-mesenchyme interaction is reaponsible for odontogenesis. Why?

Answer 2

True. Mesenchyme interacts with the dental papilla and enamel organ at different stages to induce various stages in odontogenesis like the fornation of pre-ameloblasts and pre-odontoblasts

Question 3

T/F. Aprismatic enamel forms prior to mantle Dentin

Answer 3

False

Mantle Denton always forms first. Aprismatic enamel forms second

Question 4

T/F The membrane preformative replaces the DEJ

Answer 4

False

The membrane performative is another name for the basement membrane. The DEJ replaces the membrane performative/basement membrane

Question 5

T/F Epidermoid cyst usually lies between the branchial arches

Answer 5

False

Epidermoid cysts occur in the floor of the mouth. Branchial cysts lie between the second and third Branchial arches

Question 6

What structure is responsible for cusp formation? What is it composed of?

Answer 6

The enamel knot. Composed of a mass of stellate reticulum, signals cusp formation

Question 7

What will the primary dental lamina give rise to?

Answer 7

The enamel Organ. Dental lamina is an epithelial band that gives rise to tooth buds/enamel organs

Derived from ectoderm

Question 8

What will the dental papilla give rise to?

Answer 8

Dentin and pulp. Why is inside the enamel organ concavity. Derived from Neuroectoderm

Question 9

What does He rtwigs epithelial root sheath induce to form odontoblasts?

Answer 9

The dental Papilla. Located inside the enamel organ concavity

Question 10

At the future site of what structure is the epithelial diaphragm located?

Answer 10

The apical foramen

The epithelial diaphragm is stationary and forms the future apical foramen

Question 11

What does the cervical loop form?

Answer 11

The cementoenamel junction

Question 12

What forms during the bell stage of tooth development?

Answer 12

Preameloblasts
Stratum intermedium
Pre-odontoblast
Dental laminate of the permanent molars

Question 13

Does the cervical loop form during the bell stage?

Answer 13

No. Forms during the Stage

Question 14

What may arise from the cell rests of serres?

Answer 14

May form cysts. These cell rests form during the bell stage

Question 15

Which cells will histodifferentiate and give rise to preameloblasts

Answer 15

Inner enamel epithelium

Question 16

What is the Dentin that forms the Dentin tubules called?

Answer 16

Peritubular Dentin.

Question 17

What does the Hyaline layer of Hopewell Smith cover?

Answer 17

Root dentin (mantle)

Question 18

Which cells is calcium hydroxyapatite utilized in radicular Dentin mineralization derived from?

Answer 18

Odontoblast. Matrix vesicles/calcium hydroxyapatite form Dentin

Odontoblast are involved in the formation of all Dentin

Question 19

What is the acceptable INR range for treating a patient on blood thinners?

Answer 19

0.8-1.1

Question 20

What induces and synchronizes the development of the neural tube?

Answer 20

The notochord process

Question 21

What does the philtrum of the upper lip form from?

Answer 21

Intermaxillary segment– fusion of the maxillary process with the lateral borders of the center portion of the upper lip

Question 22

What can happen when the branchial grooves fail to fuse?

Answer 22

A cervical cyst may form

Question 23

What type of ions are utilized in muscle contractions?

Answer 23

Calcium ions

Question 24

Which portion of teeth are directly affected by core bundles that innervate the mandible?

Answer 24

Anterior teeth

Question 25

What do Schwann cells produce?

Answer 25

Myelin

Question 26

Bilaminar germ disc forms when embryoblast cells give rise to what?

Answer 26

Epiblasts and hypoblasts

Question 27

Where do proliferating cells enter during formation of the trilaminar germ disc?

Answer 27

Primitive groove

Question 28

Which dental tissues do neural crest cells of the head give rise to?

Answer 28

Cementum, dentin, PDL, pulp

Question 29

Are there blood vessels in the stratum germinativum? Why?

Answer 29

No. Stratum germinativum is the deepest layer of SSE. There are no blood vessels in stratified squamous empithelium