Relevant screenshot from KA link for neural crest wording… just to keep track of all the reasoning behind this card for the future.
@kevinpanini when you get a chance do you mind taking a read through on this. I think we want to reach some form of consensus quickly since part of the card is objectively wrong currently.
I wasnt too confident and looked it up and looks to be that the new change is the correct version.
- CNS origin:
- The CNS (central nervous system), which includes the brain and spinal cord, originates from the neural tube.
- PNS origin:
- The PNS (peripheral nervous system), which includes sensory and motor nerves outside the CNS, arises from the neural crest cells, not the neural fold or neural tube directly.
Im realizing this card is redundant with two other cards in the deck and that I also didn’t need to do as much research as I did since the facts were already in the deck 
. happens. We have:
During embyrogenesis, migratory neural crest cells give rise to many {{c1::peripheral}} nervous system structures, while the neural tube gives rise to the {{c1::central}} nervous system.
{{c1::Neurulation}} results in the formation of the {{c2::neural tube}}, which gives rise to {{c2::both the spinal cord and the brain}}.
The only added detail is that this card explicitly connects the neural tube and neural crest cells directly to the ectoderm.
The original was The CNS and PNS derive from the {{c1::ectoderm, neural fold and neural tube to be more specific::germ layer}}. We correctly established here that it shouldn’t include the neural fold. But idk what to do with the card now/if it’s worth being redundant to make it super clear that the neural tube and neural crest are from the ectoderm. Keeping it as the CNS and PNS derive from the {{c1::ectoderm::germ layer}} seems kind of useless when we already have
{{c1::Ectoderm::Germ layer}} develops into the {{c2::*nervous system… in another card
every card in the deck has like 2 duplicates, i see no issue as it still testing the main topics.
@AnKing-MCAT-Maintainers
Can we aim to reach some form of conclusion on this when you get a chance. I just want to make some change quickly cause the CNS does not come from the neural fold as currently written. The way I see it, both options are repetitive and we either go with:
The CNS and PNS derive from the {{c1::ectoderm::germ layer}} which is kind of a throwaway card.
or we go with my suggestion above which is repetitive and essentially combines two other cards in the deck but at least this maybe adds a direct comparison in the same card for where the CNS and PNS derive from. It also explicitly links the neural tube and neural crest cells to the ectoderm which you would hope is obvious but technically not in the other two cards.
What are we reaching conclusion on? This one has had enough details that I’m not clear where we stand, tbh
We agreed that the suggested edit content is correct but recently realized it is somewhat redundant. However, the other option which is just to do go with The CNS and PNS derive from the {{c1::ectoderm::germ layer}} is pretty redundant/useless when we have {{c1::Ectoderm::Germ layer}} develops into the {{c2::*nervous system… in another card.
This second option is closer to an older version of the card which was The CNS and PNS derive from the {{c1::ectoderm, neural fold and neural tube to be more specific::germ layer}} and was then changed to the current version because the neural fold is incorrect and because the way the card is set up it only asks for the germ layer so it throws off anyone answering it without separating out the info into two additional clozes. Again we could just go with The CNS and PNS derive from the {{c1::ectoderm::germ layer}} but I feel like the card accomplishes very little.
There is for sure some redundancy around the deck. To some degree that may not be 100% avoidable. At least in some cases, I might argue that the redundancy is useful in certain lights, as even though a bit of information might be repetitive it might be useful cueing for other recall/parts of the card.
At a glance, I don’t immediately see improvements on the card that don’t, in turn, create other downstream considerations for which we have seemingly less optimal solutions atm