Summary
Samenvatting : vaatstelsel
- Course
- Institution
Samenvatting : vaatstelsel
[Show more]
Seller
Follow
meilincromboom
Content preview
VAATSTELSELHARTWAND
Myocardium = hartspierweefsel
Dun laagje bindweefsel bekleed binnen en buitenzijde myocardium
Endocarium: losmaziger langs binnenkant + bekledende cellaag = endotheel
Epicardium: densere langs buitenkant + bekledende cellaag = mesotheel
Hartwand elastische door elastische vezels in myocardium
Thv kleppen: hartwand verstevigd door collagene vezels hartskelet
Hartkleppen = derivaten v/h endocarium uit bindweefselig inwendige, met endotheel
MYOCARDIUM:
Rijk aan bloedvaten coronaire bloedvaten
bloedvaten tussen bundels hartspiervezels/ myocardiocyten bundels van Henle gevuld met
losmazig bindweefsel
IMPULSGELEIDEND STELSTEL. PURKINJECELLEN
MYOCARDIOCYTEN
Signaal SA- knoop AV- knoop bundels van His purkinjevezels hartspiervezels
PURKINJEVEZELS
Groter en minder langwerpig dan hartspiervezels
Grote hoeveelheden glycogeen
Geen myofibrillen meer niet contractiel
Vertonen geïntercaleerde schijven
LM: bleek
HARTSPIERWEEFSEL
Enkel aanwezig in myocardium
HARTSPIERVEZELS: MYOCARDIOCYTEN
Dwarsgestreept (zoals skeletspiervezels)
Synctiaal karakter liggen op centrale as
Centraal “dik” + aan weerszijde korte uitlopers vorming netwerk
Rond kern filamentvrij cytoplasma perinucleaire halo (gevuld met mitoch en glycogeen)
Celjuncties tussen hartspiervezels
GEINTERCALEERDE SCHIJVEN p35
Dunnere dwarsstreping = overlapping actine- en myosinefilamenten ≠ dikkere trapvormige strepen =
celjuncties
Geïntercaleerde schijven:
individuele strepen tussen 2 opeenvolgende spiervezels
gans junctioneel complex zowel mechanisch als communicerende juncties
adherens en desmosomen gap junction
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 meilincromboom. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $6.45. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
66579 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now