Step I More inconsistencies

[moo]

I hate this. If I'm studying, at least I wish these bastards would give us information that doesn't conflict with each other. OK, so in DiGeorge, the defect results from a failure of what? BRS path says its from a failure of embryonic development of the third and fourth branchial arches. FA says it's from the third branchial POUCH. HY embryo also says pouch. Qbank, my friend tells me, says it's from the third ARCH (agreeing with BRS path). We've got four sources, and it's 2 vs 2. Anyone have a tie breaker source?

 

[FoxyDoc]

In DiGeorge's the defect is in the 3rd and 4th Pouch.

 

[Willamette]

I hate this. If I'm studying, at least I wish these bastards would give us information that doesn't conflict with each other. OK, so in DiGeorge, the defect results from a failure of what? BRS path says its from a failure of embryonic development of the third and fourth branchial arches. FA says it's from the third branchial POUCH. HY embryo also says pouch. Qbank, my friend tells me, says it's from the third ARCH (agreeing with BRS path). We've got four sources, and it's 2 vs 2. Anyone have a tie breaker source?

3rd-4th pharyngeal POUCHES

Robbins & Goljan both say this....


Willamette

 

[Jalby]

High yield embryo says that it is the pouches that form the PTH. Pouches are endodermal structures and the PTH glands are an endodermal struture. Arches are mesoderm and neural crest cell structures.

 

[Willamette]

High yield embryo says that it is the pouches that form the PTH. Pouches are endodermal structures and the PTH glands are an endodermal struture. Arches are mesoderm and neural crest cell structures.

Yep...thus the FA mnemonic: CAP covers from outside in

C--> Clefts...ECTOderm
A--> Arches...MESOderm
P--> Pouches...ENDOderm

Willamette

 

[AlexRusso]

Definately gonna have to go with POUCHES on this one.

 

[Idiopathic]

Yeah, weve seen this brought up before. Definitely pouches. Willamette's mnemonic is the way to go.

 

[Mossjoh]

I saw that in BRS Path also....in that case BRS path is wrong...surprise surprise....3rd and 4th pharyngeal pouches it is!!

Mossjoh

 

[Idiopathic]

Just a typo...even the best have mistakes.