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Reproductive - step > Aortic and Branchial derivatives > Flashcards

Aortic and Branchial derivatives Flashcards

1
Q

derivative of the 1st aortic arch

A

part of the maxiallary artery (branch of the external carotid)

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2
Q

derivate of the 2nd aortic arch

A

stapedial artery

hyoid artery

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3
Q

derivative of the 3rd aortic arch

A

common carotid

proximal of the internal carotid

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4
Q

deritave of the 4th aortic arch on the right

A

proximal part of the subclavian artery where the right recurrent laryngeal wraps around

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5
Q

derivative of the 4th aortic arch on the left

A

aortic arch

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6
Q

derivative of the 5th aortic arch

A

nothing jk

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7
Q

derivative of the 6th aortic arch on the left

A

ductus arterois
proximal part of the pulmonary artery
where left recurrent laryngeal nerce gets caught

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8
Q

derivative of the 6th aortic arch on the right

A

proximal part of the pulmonary artery

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9
Q

where is the right recurrent laryngeal nerve?

A

on the derivative of the 4th aortic arch - proximal part of the subclavian

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10
Q

where is the left recurrent laryngeal nerve?

A

on the derivative of the 6th aortic arch - ductus arteriosus

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11
Q

what are the branchial clefts made of

A

ectoderm

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12
Q

what are the branchail arches made of

A

mesoderm - muscle and artery

neural crest cells - bone and cartilage

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13
Q

what are the branchial pouches made of

A

endoderm

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14
Q

what does the 1st branchail cleft become

A

external auditory meatus

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15
Q

external auditory meatus

A

1st branchial cleft - ectoderm

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16
Q

what does the 2nd through 4th clefts become

A

temporary cervial sinuses - obliterate by proliferation of second arch mesenchyme

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17
Q

what is a branchial cleft cyst

A

in lateral neck

persistence of the cerivical sinus formed from the 2nd thorugh 4th branchial clefts

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18
Q

cartilage from the first branchial arch please

A

meckels cartilage: mandible, malleus, incus, sphenomandibular ligament

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19
Q

muscles from the first branchial arch please

A

muscles of mastication: temporalis, masseters, lateral pterygoind, medial pterygoid, anterior bello fo digastric, tensor tympani, tensor veli palatini

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20
Q

what nerves associated with the first branchial arch

A

V2 and V3

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21
Q

what is treacher collins syndrome

A

first branchial arch neural crest cells fail to migrate = mandibular hypoplasia and facial abnormalities (lmandbile, malleus, incus, spenomandibular ligamnet)

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22
Q

what cartilage from the second arch

A

reichert cartilage - stapes, styloid process, lesser horn of hyoid and stylohyoid ligmanet

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23
Q

muscles from second arch

A

muscles of facial expression, stapedius, stylohoid ,platysma, posterior belly of digastric

24
Q

nerve associated with second branchial arch

A

VII

25
Q

what is congenital pharyngocutaneous fistula

A

persistence of second cleft and pouch - fistula between tonsillar area and lateral neck

26
Q

fistula between tonsillar area and lateral neck

A

persistence of second cleft and pouch - a congenital pharyngocutaneous fistula

27
Q

what cartilage from the third branchail arch

A

greater horn of the hyoid

28
Q

what muscle from the third branchial arch

A

stylopharyngeus

29
Q

what nerve for third branchial arch

A

IX

30
Q

what cartilage from the fourth to sixth branchial arches

A

thyroid, cricoid, arytenoids, corniculate, cuneiform

31
Q

what muscles with the fourth arch

A

most pahyrngeal constrictors, cricothyroid, levator veli palatini

32
Q

what nerve with fourth arch

A

superior laryngeal branch X

33
Q

what muscle with sixth arch

A

all intrinsic muscles fo larynx except cricothyroid

34
Q

what nerve with sixth arch

A

recureent laryngeal branch of CN X

35
Q

what arches make up tongue

A

third and fourth make up posterior 1/3 of tongue

36
Q

what comes from the fifth arch

A

nothing

37
Q

what CN are both motor and sensory

A

the ones associated with the branchial arches

V3 (not V2), VII, IX and X

38
Q

what comes from the first branchial pouch

A

middle ear cavity, eustachain tube, mastoid air cells

39
Q

describe where the ear comes from

A

external auditory meatus = first branchial cleft
malleusand incus - from first branchial arch
stapedius = second branchial arch
middle ear cavity, eustachian tube, mastoid air cells = first branchail pouch

40
Q

what comes from the second branchial pouch

A

epithelial lining of the palatine tonsil

41
Q

which pouch contributes to endoderm lined structures fo ear

A

first branchial pouch

42
Q

what comes from teh dorsal wings of the third branchial pouch

A

inferior parathyroids

43
Q

what comes from teh ventral wings of the third pouch

A

the thymus

44
Q

what comes from the third pouch

A

2x inferior thyroids

1x thymus

45
Q

what comes from the fourth pouch

A

dorsal wing - superior parathyroids

46
Q

list everything that comes from the fisrt branchial cleft/arch/pouch

A

first cleft - external auditory meatus
first arch - mandible, malleus, incus, sphenomandibular ligament AND muscles of mastication, mylohyoid, anterior belly of digastric, tensor veli palatini, tensor tympani AND CN V2 and V3
first pouch: middle ear cavity, eustachian tube, mastoid air cells

47
Q

list everythign that comes from the second branchial cleft/arch/pouch

A

second cleft - cervical sinus
second arch - stapes, styloid process, lesser horn of hyoid, stylohyoid AND muscles fo facial expression, stapeduis, stylohyoind , platysma, posterior belly of digastric, Cn VII
second pouch - epithelial lining of palatine tonsil

48
Q

list everythign that comes from third branchial cleft/arch/pouch

A

third cleft - cervical sinus
third arch - greater horn of hyoid AND stylopharyngeous, IX
third pouch - inferior parathyroids, thymus

49
Q

list everything that comes from the fourth branchial cleft/arch/pouch

A

fourth cleft - cervical sinus
fourth arch - thyorid cricoid aryteniods coniculate and cuneiform cartilages AND most pharyngeal constrictors and cirticothyroid and levator veli palatini with CN X superior laryngeal
foruth pouch - superior parathyroids

50
Q

list everythign that comes from fifth branchial cleft/arch/pouch

A

nothing

51
Q

list everything that comes from the sixth branchial cleft/arch/pouch

A

cleft - nothing
arch - thyroid, cricoid, arytenoids, corniculate and cuneiform cartilages AND all intrinsic muscles fo layrnx excetp ricothyroid AND CN X recurrent laryngeal nerve

52
Q

describe the pathogenesis of DiGeorge

A

failure of the third adn foruth branchial pouches

53
Q

describe de george syndrome

A 
thymic aplasia (no third pouch) = T cell deficiency
parathyroid agenesis (no third or fourth pouch) = hypocalcemia
cardiac defects (conotronucal amonalies)
54
Q

what is MEN2a pathogenesis

A

RET oncogence mutatlion

failure of neural crest cells

55
Q

describe Men 2A

A

pheochromocytoma @ adrenal cortex
parathryoid tumor - 3rd and 4th parhngeal pouch
medullary thyroid cancer/parafollicular cells - from neural crest cells and associated wiht 4th and 5th pahryngeal pouches.

Reproductive - step (11 decks)

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