De entero-endocriene cellen van de duodenum secreteren 2 stoffen:
Cholecystokinine (CCK): gaat inwerken op de endocriene klieren -> secreet pancreas eiwitrijk
Secretine: gaat inwerken op de cellen van de schakelstukken (exocrien) -> secreet pancreas
bicarbonaatrijk
Acinaire pancreatische cellen secreteren: inactief trypsine, chymotrypsine en carboxylpeptidase,
actief amylase, lipase, cholesterol esterase en fosfolypase en inhibitor van trypsine
Endocrien gedeelte: eilandjes van Langerhans
Kenmerken:
Secreet makkelijk en rechtstreeks afgeven aan de bloedbaan
Flets aangekleurd, ronde celgroepen middenin de sterk basofiele acini van de exocriene
pancreas
Verspreid over pancreas, maar talrijker in staartgebied
Elk eilandje bestaat uit epitheelcellen en capillair netwerk
Afgrenzing exocrien gedeelte door onregelmatig laagje van fijne collagene vezels
Grootste klier bij zoogdieren
Uniforme histologie bij elke species
Secretoire, beschermende en synthetische functie
Sterk regeneratievermogen
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 lottehulselmans. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.56. You're not tied to anything after your purchase.