heart development

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heart development

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msyamp
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01/10/06 - 10:00 AM

which part of the heart is derived from neural crest cells?

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msyamp
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01/10/06 - 10:22 AM

GUYS?

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kishore80
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01/10/06 - 11:02 AM

right atrium?

drk1980
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01/10/06 - 11:09 AM

aorticopulmonary septum....endocardial cushion

mle123
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01/10/06 - 11:10 AM

aortico pulmonary septum and av cushion

msyamp
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01/10/06 - 11:29 AM

great thank you.

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sturge_weber
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01/10/06 - 01:27 PM

aorticopulmonary septum

the neural crest cells migrate here and form in a spiral fashion, and failure here can lead to truncus arteriosus

zaidsuror
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02/06/06 - 05:56 AM

there are three pointsabout the formation of the aortico-pulmonary septum.

1-spiralilization:faliure causes transposition of the great vessels.

2-forms right in the middle of the truncus arteriosis:unequlity (deviated to the right causes TOF)

3-downward extension to close the iv foreamen:thats whyabsence of the ap septum causes persistant T A that is always associated with vsd.

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zaidsuror
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02/06/06 - 05:57 AM

CAN SOMEONE CLARIFY HOW AND WHEN THE NEURAL CREST CELLS FORM AV CUSHION?

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mona1976
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12/24/06 - 10:22 PM

#10

Aorticopulmonary septum is form from neural crest cells. Neural crest cells migrate into the truncal and bulbar ridges, which grow in a spiral fashion to form AP septum.

Sayulita
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02/01/07 - 07:55 PM

#11

good thanks

lq2006
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05/25/07 - 04:39 PM

#12

Aorticopulmonary septum

po
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08/21/07 - 09:35 AM

#13

zaidsuror wrote:
CAN SOMEONE CLARIFY HOW AND WHEN THE NEURAL CREST CELLS FORM AV CUSHION?

AV CUSHION=makes atrioventricular septum not aorticopulmonary.so it is not derived from neural crest cells.

And defects in formation of aortico pulm septum would give rise to= 3T's
1.persistent T runcus arteriosus=rt to left shunt
[One big undivided artery for both ventricles]
2.complete T ransposition of arteries=rt to left shunt
3.fallot's T etrology=rt to left shunt
--->all cause cyanosis

Atrioventricular[AV] septal defects=
1.Univentricular heart=one ventricle though there are 2 separate arteries
2.Tricuspid atresia=absence of tricuspid valve with hypoplastic rt ventricle blood coming from VSD and rt atrial blood going to left atrium via patent foramen ovale.

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