Exam (elaborations)
PSYCH 439 - Chapter 4 Questions and answers latest update
- Course
- PSYCH 439
- Institution
- Texas A&M University
PSYCH 439 - Chapter 4 Questions and answers latest update
[Show more]
Content preview
Solution 2024/2025Pepper
PSYCH 439 - Chapter 4 Questions and answers
latest update
cell-to-cell contact ANS✔✔ the fruit fly retina develops through orderly
progression of gene expression
starts w morphogenetic furrow - wave of dividing and differentiating cells in
eye from post to ant , leaving maturing neurons in wake
cells produce hedgehog (HH) - induces expression of DPP which STOPS
MITOSIS and starts proneural gene production (HH protein from one cell
communicates to the other cells to begin dpp expression)
photoreceptor R8 ANS✔✔ cluster of cells starts as homogenous
then overflow into adjacent cells
matures first (boss)
directs development of the other photoreceptors
order of recruitment for being differentiated!!!!
factors that influence whether a cell will be a neuron or a glia ANS✔✔
generation number (later cells are likely to be glia cells - intrinsic)
BMP (BMP after neural tube form = sets up dorsal/ventral boundary with
Shh - extrinsic)
notch/delta pathway (neural cells and rest are glial cells)
differentiation of motor neurons ANS✔✔ small changes in Shh concentration
can make big difference in cell differentiation
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Schoolflix. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67163 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now