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Dental Embryology, Histology, and Anaotmy > Unit 2 Practice Quiz > Flashcards

Unit 2 Practice Quiz Flashcards

1
Q

Which of the following is the prenatal diagnostic procedure that samples amniotic fluid?

A

Amniocentesis

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2
Q

A blastocyst is a structure formed during prenatal development consisting of _____ cells and an inner mass of cells that finally develop into the embryo.

A

Trophoblast

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3
Q

Congenital malformations are birth defects or developmental problems that are evident

A

at birth.

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4
Q

An ectopic pregnancy has implantation directly occurring

A

outside the uterus.

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5
Q

Which of the following structures is directly derived from the implanted blastocyst?

A

Embryo

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6
Q

Which of the following is the CORRECT definition of histodifferentiation?

A

Development of specific tissue morphology

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7
Q

Which of the following is the posterior part of the future digestive tract?

A

Hindgut

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8
Q

The hypoblast layer is also considered part of which of the following structures?

A

Inferior layer of the bilaminar disc

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9
Q

Where is the primitive streak located within the embryonic disc?

A

Middle

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10
Q

Which of the following is the BEST term used for the embryonic layer located between the ectoderm and the endoderm?

A

Mesoderm

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11
Q

Which of the following can be considered the process of reproductive cell production that ensures the CORRECT number of chromosomes?

A

Meiosis

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12
Q

Which of the following is a viral infection that can serve as a teratogen and thus is transmitted by way of placenta from the pregnant woman to possibly cause injury to embryo?

A

Rubella

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13
Q

Somites are paired cuboidal aggregates of cells directly differentiated from the

A

mesoderm.

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14
Q

Which of the following is the BEST term used for a fertilized egg formed from the union of ovum and sperm?

A

Zygote

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15
Q

What type of stain is tetracycline stain considered?

A

Intrinsic

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16
Q

The pharyngeal or branchial apparatus includes the pharyngeal or branchial arches, the pharyngeal or branchial grooves and membranes, as well as the

A

pharyngeal pouches.

17
Q

The intermaxillary segment is a direct growth from which of the following paired processes on the inside of the stomodeum?

A

Medial nasal

18
Q

Which of the following initially primitive structures in the embryo is formed from the stomodeum?

A

Mouth

19
Q

Which numbered pharyngeal or branchial arch is the hyoid arch since it is located inferior to mandibular arch in the embryo?

A

Second

20
Q

Cervical cysts are developed when which of the following structures do NOT become obliterated upon maturation of the fetus?

A

Branchial or pharyngeal grooves

21
Q

Which of the following structure’s formation allows for the disappearance of Meckel cartilage?

A

Mandible

22
Q

Reichert cartilage is the cartilage within the second pharyngeal or branchial arch that eventually disappears, although parts of it form

A

a middle ear bone.

23
Q

Which of the following is considered a rudimentary embryonic pharyngeal or branchial arch?

A

Fifth

24
Q

Which pharyngeal or branchial arch in the embryo fuses with the fourth pharyngeal or branchial arch?

A

Sixth

25
Q

Where are the pharyngeal pouches located during development of the face and neck?

A

Between the pharyngeal or branchial arches

26
Q

How many pharyngeal pouches are present during development of the face and neck?

A

Four

27
Q

What is the largest number of pairs of pharyngeal or branchial arches that can be present during development of the face and neck?

A

Six

28
Q

Which of the following is considered the first pharyngeal or branchial arch?

A

Mandibular arch

29
Q

Which pharyngeal or branchial arch is responsible for parts of the future hyoid bone?

A

Third

30
Q

Where is the frontonasal process located during development of the face?

A

Cephalic end of the embryo

31
Q

Where is the tuberculum impar located in the embryo during development of the face and neck?

A

Midline

32
Q

From which pharyngeal or branchial arch during development of the face and neck does the epiglottic swelling develop?

A

Fourth

33
Q

The copula is formed from the third and fourth pharyngeal or branchial arches that later overgrows the _____ arches to form tongue base.

A

second

34
Q

The copula is formed from the third and fourth pharyngeal or branchial arches that later overgrows the _____ arches to form tongue base.

A

second

35
Q

Which of the following forms the base of the tongue during development?

A

Tuberculum impar

36
Q

Which of the following cell types is known to directly influence the ectomesenchyme?

A

Neural crest cells

Dental Embryology, Histology, and Anaotmy (5 decks)

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