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NDBE Part 1: Anatomical Sciences > Development > Flashcards

Development Flashcards

1
Q

Brachial arch 1

A

a: maxillary
n: trigeminal

m: mastication, tensor tympani, mylohyoid, tensor veli palatini, ant. digastric
bone: malleus, incus, sphenomandibular lig, Meckel’s cartilage

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2
Q

Brachial pouch 1

A

middle ear
auditory tube
tympanic membrane
EAM

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3
Q

Brachial arch 2

A

a: hyoid, stapedial
n: facial
m: facial expression, stapedius, stylohyoid, post digastric
skeletal: stapes, styloid process, stylohyoid ligament, lesser hyoid

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4
Q

Brachial pouch 2

A

supra-tonsillar fossa
lymph nodule
palatine tonsil
copula: post 1/3 tongue

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5
Q

Brachial arch 3

A

a: ICA
n: glossopharyngeal
m: styopharyngeaus
skeletal: greater hyoid

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6
Q

Brachial pouch 3

A

thymus
inf parathyroid
hypobrahcial eminence: post 1/3 tongue

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7
Q

Brachial arch 4

A

a: R subclavian, aorta
n: vagus
m: pharyngeal and laryngeal m.
skeletal: laryngeal cartilage

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8
Q

Brachial pouch 4

A

superior parathyroid

post (ultimo) brachial bodies: thyroid parafollicular (C) cells

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9
Q

Brachial arch 5

A

regresses

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10
Q

Brachial arch 6

A

a: pulmonary, ductus arterosis
n: vagus, recurrent laryngeal
m: laryngeal m (not cricothyroid)
skeletal: cricoid, arytenoid, corniculate cartilage

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11
Q

Where does the thyroid gland derive from?

A

foramen cecum (thyroglossal duct)

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12
Q

The ant 2/3 of tongue come from what brachial arches?

A

1, 2, 3
tuberculum impar
lateral lingual swellings

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13
Q

What week does the upper lip and tongue develop?

A

4

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14
Q

What week does the primary palate develop?

A

5

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15
Q

What forms during the 6th week?

A

parotid gland
secondary palate
beginning of tooth formation

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16
Q

When does the submandibular gland form?

A

week 7

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17
Q

When does the sublingual gland form?

A

week 8

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18
Q

By what week does the embryo have mature palate?

A

12

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19
Q

Where does the pituitary gland derive from?

A

stomatodeum (glandular)

diencephalon neuroectoderm

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20
Q

What forms from Rathke’s pouch?

A

adenohypophyses

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21
Q

What tissues does the thymus derive from?

A

mesenchyme

epithelium

22
Q

vertebrae come from what tissue?

A

somites

23
Q

What comes from epiblast (primary ectoderm) ?

A

amniotic cavity
ectoderm
mesoderm

24
Q

What comes from hypoblast (primary endoderm)?

A

lining of yolk sac

25
Q

Ectoderm derivatives

A

epithelium of skin
brain and spinal cord (NT)
PNS (NC)

26
Q

Endoderm derivatives

A 
lining of body cavities 
gonads
respiratory system 
liver 
pancreas
end of GU system
27
Q

Mesoderm derivaties

A

CT: cartilage, bone, blood, muscle
CV
Repro
GU

28
Q

What are the pharyngeal derivatives?

A

palatine tonsils
thymus
thyroid
parathyroid

29
Q

What do somites form?

A

sclerotome
dermatome
myotome

30
Q

What to sclerotome form?

A

vertebrae

ribs

31
Q

What do dermatomes form

A

skin (dermis)

32
Q

What do myotomes form

A

skeletal m

33
Q

What does the alar plate form?

A

sensory (post/dorsal) n

34
Q

What does the basal plate form?

A

motor (ant/ventral) n

35
Q

What are the neural crest derivatives?

A 
sensory ganglia: V, VII, IX, X
DRG 
Schwann cells 
Melanocytes 
Odontoblasts
Enterochromaffin cells
adrenal medulla
pia and arachnoid mater
Meninges 
Parafollicular cells
36
Q

Where do microglia come from?

A

mesenchymal cells

37
Q

What are ectodermal derivatives of the GI tract?

A 
oropharynx 
mucosa 
tongue 
lips 
parotid 
enamel 
rectum
anus
38
Q

What type of bone formation makes the mandible and maxilla (minus the condyles)?

A

intramembranous

39
Q

What is the vestibular lamina?

A

separates the lips and cheeks externally and jaw structures internally in the developing embryo

40
Q

Intramembranous ossification

A

from mesenchymal cells

ex: flat bones, mandibular body, maxilla, clavicle

41
Q

Endochondrial ossification

A

from hyaline cartilage

ex: mand condyles, long bones

42
Q

Appositional growth occurs in what type of ossification

A

intramembranous

endochondrial

43
Q

Intertisital growth occurs in what type of ossification

A

endochondrial

44
Q

where do m. of tongue derive from?

A

occipital somites (myotomes)

45
Q

brachial arches that make the tongue?

A

1 thru 4

4 = epiglottis

46
Q

What reaction prevents polyspermy?

A

zona reaction (changes zona pellucida)

47
Q

What makes up a blastocyst?

A

embryoblast
yolk sac
trophoblast

48
Q

what produces HcG

A

chorion

49
Q

by what week is nasal placodes developed

A

week 5

50
Q

by what week is the lip, jaw, and palatal shelves formed

A

7

51
Q

what is formed at week 10

A

nasolacrimal duct

maxillary prominences

NDBE Part 1: Anatomical Sciences (16 decks)

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