BRS Embryology Flashcards Preview

S.N Anatomy IV > BRS Embryology > Flashcards

Flashcards in BRS Embryology Deck (74)
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1
Q

somites derived from

A

paraxial mesoderm

2
Q

first pair of somites apear in day

A

20

3
Q

intermediate mesoderm forms

A

kidneys (metanephros)

gonads (mesonephros)

4
Q

lateral mesoderm will become

A

intraembryonic somatic mesoderm

intraembryonic visceral mesoderm (splanchnic)

5
Q

what gives us the nucleus pulposus of each intervertebral disl?

A

notochord remnants

6
Q

embryomic heart dilation from top to bottom

A
trancus arteriosus
bulbus cordis
primitive ventricle
primitive atrium
sinus venosus
7
Q

bulbus cordis will develope to

A

smooth part of right and left ventricle

8
Q

the junction of the trabeculated and smooth part of the right atrium is called

A

crista terminalis

9
Q

formation of the Atrial Septum

A
  • septum primum goes down
  • foramen primu, forms btw the septum primum and AV cushions
  • foramen primum closes
  • foramen secundum forms in the center of septum primum
  • septum secundum forms to the right of septum primum
10
Q

what is foramen ovale?

A

the opening btw the upper and lower limbs of the septum secundum

11
Q

what happens to blood in the atrium durring embryonic life?

A

blood is shunted from right atrium to left atrium via foramen ovale

12
Q

Atrial septum is develpoed from?

A

fusion of the septum primum and septum secundum

13
Q

AV septum forms from?

A

dorsal and ventral AV cushions approach each other and fuse

14
Q

IV septum developes from?

A

from the floor of the primitive ventricle and grows toeards the fused AV septum

15
Q

origin of the coronary arteries

A

progenitor stem cells from the liver

16
Q

1st aortic arch derivatives

A

mxillary

[1st place is MAX]

17
Q

2nd aortic arch derivatives

A

stapedial

18
Q

3rd aortic arch derivatives

A

right and left common carotid
right and left internal carotid
[C is third letter of alphabet!]

19
Q

4th aortic arch derivatives

A

right subclavian
aortic arch
[four-aor]

20
Q

6th aortic arch derivatives

A

right and left pulmonary arteries

[having SEX in POOL=six+pulmonary]

21
Q

viteline artery derivatives

A
celiac trunk
SMA
IMA
IVC
hepatic veins
ductus venosus
portal vein
splenic vein
22
Q

umbilical artery derivative

A

medial umbilical ligament

23
Q

general developement of venous system comes from

A

vitelline veins
umbilical veins
cardinal veins

24
Q

ligamentum teres comes from

A

left umbilical vein

25
Q

Anterior cardinal vein will develope to

A

SVC

internal jagular veins

26
Q

subcardinal vein will develope to

A

IVC
renal veins
gonadal veins

27
Q

supracardinal vein will develope to

A

IVC
intercostal veins
hemiazygos
azygos

28
Q

Posterior cardinal vein will develope to

A

IVC

common iliac veins

29
Q

renal veins developes from

A

subcardinal veins

30
Q

maternal component of the placenta?

A

decidua basalis- endometrium (site of implantation)

31
Q

fetal component of the placenta?

A

tertiary chorionic villi

32
Q

secondary villi consist of

A

extraembryonic mesoderm
cytyotrophoblasts
sycytiotrophoblasts

33
Q

allantois will develope to form?

A

median umbilical ligament

34
Q

3 shunts of the fetal circulation?

A

ductus venosus
ductus arteriosus
foramen ovale

35
Q

what will bring oxygenated blood to the fetus

A

left umbilical vein

36
Q

what happens to the blood arriving from the left umbilical vein?

A

blood anters liver->
blood cours through ductus venosus to enter IVC->
from IVC, blood enters right atrium->
blood cours through foramen ovale to left atrium->
left venricle->
aorta->
tissues

37
Q

how do poorly oxygenated blood leave the fetus?

A

threturns to the placenta through right and left umbilical arteries

38
Q

what happens to blood entering the right ventricle?

A

blood will enter the pulmonary trunk but wont get to the lungs bcs it will bypass the lungs through ductus arteriosus

39
Q

what give rise to all preganglionic autonomic nerves and all nerves that innervate skeletal muscles?

A

neural tube

40
Q

what give rise to the dura mater?

A

mesoderm

41
Q

cranial neural crest cells derivatives

A

People Post Ball SAC Pictures Online

Pharyngeal arch skeletal and CT 
Parafollicular (C) cells
Bones of neurocranium
Sensory ggl of CN 5,7,9,10
Aorticopulmonary septum\
Cranial parasympathetic ggl
Pia and Arachnoid
Odontoblasts
42
Q

trunk neural crest cells derivatives

A
melanocytes
schwann cells
chromaffin cells of adrenal medulla
dorsal root ggl
enteric system
43
Q

what are placodes?

A

thickenning of surface ectoderm

44
Q

what are the three placodes?

A

nasal
otic
lens

45
Q

lens placode give rise to

A

lens

46
Q

what are the two neural flexures?

A

cephalic

cervical

47
Q

Telencephalon give rise to

A
cerebral hemusphares
caudate
putamen
amygdaloid
claustrum
lamina terminalis
olfactory bulb
hippocampus
48
Q

what give rise to globus pallidus?

A

Dirncephalon

49
Q

whaere will we find astrocytes?

A

CNS

50
Q

what produces myelin in the CNS?

A

Oligodendrocytes

51
Q

where can we find ependymocytes?

A

line the central canal

line the brain ventrciles

52
Q

what will the alar plate form?

A

sensory function

Afferent=Alar

53
Q

where can we find sulcus limitans in the adult?

and in fetus?

A

in adult- rhomboid fossa

fetus- seperates alar and basal plates

54
Q

what makes myelin in the PNS?

A

Schwann cells

55
Q

whta give rise to the superior and inferior colliculi?

A

Alar plate sensroy neuroblasts

56
Q

Anterior lobe of pituitery developes from?

A

Rathkes pouch= ectodermal diverticulum of the primitive oral cavity

57
Q

neurohypohphysis developes from?

A

infundibulum= neuroectodermal ventral evagination from the hypothalamus

58
Q

choroid plexus consist of

A

modified ependymocytes

vascular pia mater (tela choroidea)

59
Q

internal ear developes from

A

otic placode

60
Q

middle ear, 1st pharyngeal arch derivatives

A

malleus
incus
tensor tympani muscle

61
Q

middle ear, 2nd pharyngeal arch derivatives

A

stapes

stapedius muscle

62
Q

Meckel cartilage is derived from

A

neural crest cells

63
Q

optic cup derivatives

A
outer pigmentd layer
inner neural layer
(both for retina)
iris
ciliary body
64
Q

optic cup derived from

A

diencephalon

65
Q

ventral mesentry becomes

A

lesser omentum

ventralllllesser

66
Q

dorsal mesentry becomes

A

greater omentum

67
Q

easy way to remember cardinal veins derivatives by RK

A

ant=2 (most important! SVC, internal jagular)
post=2 (IVC, common iliac)
sub=3 (IVC, renal, gonadal. כי הם מתחת)
supra=4 (IVC, intercostal, hemiazygos, azygos)

68
Q

otic placode derivatives

A
GUNS Can Slaughter (like this fucking embryology. thanks RK!!)
Ganglia (spiral and vestibular)
Utracle
Nerve VIII
Semicircular ducts
Corti's organ
Saccule
69
Q

diaphragm origin

A
Diaphragm is STabilized By Phrenic Dude!
Septum Transversum
Body wall
Pleuroperitoneal membranes
Dorsal mesentery of esophagus
70
Q

Paramesonephric will give us

A

Mullerian

[there is a yogurt name Muller and yogurt yo make from PARA which means cow in Hebrew. thanks RK!]

71
Q

Wollfian duct derives from

A

Mesonephric!

W is like M but upside down

72
Q

origin of labia minora?

A

urogenital folds

73
Q

origin of labia majora?

A

labioscrotal swelling

74
Q

mesonephric duct in male

A
Every Sperm Elevates Via Deferens
Epididymis
Seminal vesicle
Ejaculation duct
Vas deferens