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oral embryology > quiz on lecture 4 > Flashcards

quiz on lecture 4 Flashcards

1
Q

mesoderm forms

A

connective tissue and bone

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2
Q

ectoderm forms

A

skin

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3
Q

endoderm forms

A

digestive tract (GI)

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4
Q

what is stomodeum

A

primitive mouth

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5
Q

ectoderm folds and lines

A

mouth

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6
Q

what are the two bulges inferior the mouth

A

mandibular processes that fuse at midline to form mandibular arch (first branchial arch)

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7
Q

what is the cartilage around 1st branchial arch

A

meckel’s cartilage

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8
Q

maxillary processes came from

A

came from mandibular arch and mesenchyme

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9
Q

what do the maxillary processes form

A

upper lips, cheeks, secondary palate, most of the midface, posterior maxillary teeth and canines

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10
Q

max process fuse with mandibular arch on each side to form what

A

labial commisure

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11
Q

what are rounded areas of thickened ectoderm found at the location of developing sense organs, lines otic and nasal ___

A

placode

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12
Q

there is an open communication between

A

the oral and nasal cavities

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13
Q

medial nasal processes fuse externally to help form

A

upper lip and middle part of nose(philtrum)

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14
Q

medial nasal processes fuse internally–

A

intermaxillary segment(premaxillary primary palate)

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15
Q

intermaxillary segment made up of

A

maxillary incisor teeth and adjacent tissue, primary palate, part of the nasal septum, !primary palate only hold incisor teeth!

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16
Q

lateral nasal processes in the future will form

A

the ala of nose

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17
Q

2nd branchial arch called

A

hyoid arch with reicharts cartilage

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18
Q

branchial grooves externally covered with

A

ectoderm

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19
Q

pharyngeal pouches internally covered with

A

covered with endoderm

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20
Q

each arch is separated by

A

branchial grooves externally and pharyngeal pouches internally

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21
Q

grooves = what

A

clefts when pinch back in

22
Q

maxillary process failure to fuse with medial nasal process

23
Q

what is the mildest form of cleft palate

A

cleft uvula

24
Q

forms mandible, muscles of mastication(masseter, temporalis, pterygoids), meckels cartilage, incus

A

1st brachial arch

25
Q

facial muscles and muscles of expression, stapes, styloid, lesser hyoid

A

2nd brachial arch

26
Q

greater hyoid, a pharyngeal muscles and cartilages of the throat

A

3rd branchial arch

27
Q

pharyngeal constrictors, thyroid and laryngeal cartilages, muscles of the throat

A

IV BRANCHIAL ARCH

28
Q

thyroid and laryngeal cartilage

A

V branchial arch

29
Q

branchial grooves helps form

A

external auditory canal

30
Q

what are the pharyngeal pouches

A

I. middle ear, eustachian tube(auditory tube)
II. palatine tonsils and pharyngeal walls
III. inferior parathyroid, thymus gland
IV. superior parathyroid
V. ultimobranchial body

31
Q

what cranial nerve enters the mandibular arch (1st arch)

A

V- trigeminal

32
Q

what cranial nerve enters the hyoid arch (2nd arch)

A

VII- facial

33
Q

what cranial nerve enters the 3rd arch

A

IX- glossopharyngeal

34
Q

what cranial nerve enters the 4th arch

35
Q

what cranial nerve enters the 5th arch

A

XI- spinal accessory

36
Q

the III arch vessels are the

A

common carotid arteries, which branch into the internal carotid arteries

37
Q

facial supply shifts from the internal carotid to the ___________

A

external carotid in the 7th week

38
Q

the IV arch vessel becomes the

A

dorsal aorta

39
Q

the VI arch vessel becomes the

A

pulmonary arteries

40
Q

what arch vessels disappear

41
Q

what aortic arch is associated with the 1st branchial arch

42
Q

what aortic arch is associated with the 2nd branchial arch

43
Q

what aortic arch is associated with the 3rd branchial arch

44
Q

what aortic arch is associated with the 4th branchial arch

45
Q

what aortic arch is associated with the 5th branchial arch

46
Q

what branchiometric muscles are associated with 3rd branchial arch

A

stylopharyngeus

47
Q

what branchiometric muscles are associated with the 4th branchial arch

A

laryngeal musculature, pharyngeal constrictors

48
Q

what branchiometric muscles are associated with the 5th branchial arch

A

sternocleidomastoid

trapezius

49
Q

neural crest cells develop from the

A

neuroectoderm

50
Q

neural crest cells migrate toward

A

mesenchyme and then differentiate

oral embryology (10 decks)

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