Ten Cate's Flashcards
Which of the following anatomic structures does the first brachial arch ultimately give rise to?
a. Tonsils, eustachian tube, and tympanic membrane
b. Thymus, Parathyroid gland, and Tonsils
c. Tympanic membrane, tympanic cavity, and eustachian tube
d. Thyroid gland, parathyroid gland, and thymus
Ch 3
c. Tympanic membrane, tympanic cavity, and eustachian tube
What brachial arch leads to formation of the mandible and maxilla?
Ch 3
Arch 1
Arch 2 and 3 lead to formation of the hyoid apparatus
What are the boundaries of the primitive stomatodeum?
Ch 3
Frontal prominence, pair of first brachial arches, heart
Which D1x transcription factor(s) plays a role in both mandible and maxilla development?
Ch 3
D1x1 and D1x2
Which of the following makes up the bulk of gingival connective tissue?
a. Type I collagen
b. Type IV collagen
c. Type II collagen
d. None of the above
Ch 4
A. type 1
What receptors do local anesthetic blocks work on?
Ch 4
The drug couples with sodium voltage-gated receptors, inhibiting generation of action potentials and preventing propagation of sensory information
What is the correct order of odontogenesis stages?
Ch 5
Bud, cap, bell
Describe the following odontogenesis stages main event(s)?
Bud stage
Cap stage
Bell stage
Ch 5
Bud stage: condensation of ectomesenchymal cells
Cap stage: tooth bud growth, formation of enamel knots
Bell stage: Histodifferentiation
Please label the following image:
Ch 5
Which of the following correctly matches the origin cells to the developed tissue?
Dental follicle → Periodontium
Dental papilla → Enamel
Dental follicle → Pulp
Enamel organ → Dentin
Ch 5
Dental follicle → Periodontium
When does vascular supply begin to develop in odontogenesis?
Ch 5
Cap stage
What location of bone are the following cells found?
Osteocyte
Osteoblast
Osteoclast
Ch 6
Osteocyte - lacunae
Osteoblast - bone lining layer
Osteoclast - Howship’s lacunae
Describe the general steps in bone devleopment
CH 6
Intramembranous bone starts as woven bone plates, which fuse and become polarized, and then expands
What are the 5 phases of bone remodeling
Ch 6
Activation, Resorption, Reversal, Formation, Resting
What is the correct proportion of mineral to water/organic material of enamel?
98% mineral, 2% water/organic material
68% mineral, 32% water/organic material
92% mineral, 8% water/organic material
96% mineral, 4% water/organic material
Ch 7
96% mineral, 4% water/organic material
Describe each amelogenesis stage:
Presecretory phase →
Secretory phase →
Maturation phase →
Ch 7
Presecretory phase → Cells differentiate into ameloblasts
Secretory phase → ameloblasts elaborate and organize the entire enamel thickness, resulting in the formation of a highly ordered tissue. Cells continually secrete granules to form initial layer of enamel
Maturation phase → morphogenesis of ameloblasts and cell death. Approximately 25% of the cells die during the transitional phase, and another 25% die as enamel maturation proceeds
Which of the following is an ameloblast secretory product?
Enamelysin
Amelotin
Protein A
Ameloblast associated glutmaine-1 (AG1)
Ch7
Enamelysin
Amelotin
What direction to enamel rods sit relative to dentin?
Ch 7
Rods lie perpendicular to the surface of the dentin, with a slight inclination towards the cusp
What 3 things does acid etch remove?
Ch 7
Acid etching removes plaque and other debris, along with a thin layer of enamel
Second, it increases the porosity of exposed surfaces through selective dissolution of crystals, which provides a better bonding surface for the restorative and adhesive materials
What crystal orientation facilitates more acid etching pattern?
Ch 7
crystals dissolve more readily at their ends than on their sides – those lying perpendicular to surface most vulnerable
