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Cell Junctions
review of the cell
22 cards·by browncl4
What are the four basic types of cell junctions?
Tight, Gap, Intermediate and Desmosome
___(Zonula Occludens)->strong junction
Tight
____(Nexus)->connection/communication line
Gap
____(Zonula Adherens; Belt Desmosome)->have interstitial flow
Intermediate
____(Macula Adherens) strong/ tight attachments btwn cells.
Desmosome
Tight have membranes___.
fused
Tight have no_____ and _______.
flow past and btwn cells and leaks
Tight passage of ______.
materials through the membrane must be through cell
What are some examples of a tight junction?
gut, bladder and blood-brain barrier
In Gap small ___form____ for_____.
tubes, open pores, easy/rapid communication btwn cells
___conduct action potentials easily.
Gap
Intermediate____in strength btwn __and ____.
intermediate, tight and gap junctions
Intermediate allows some______.
flow past and btwn cells
What is an example of Gap Junction?
intercalated disks in cardiac muscle
What is an example of Intermediate?
Parenchyma
What is parenchyma?
usually used to hold cells and organs together
___is leaky.
Intermediate
_____has strong points of adherence.
Desmosome
___strong.
Desmosome
Desmosome forms___btwn cells.
spot welds
Desmosome keeps cells from_____.
seperating where stretched
Desosome junctions are found where there's stretching such as______.
muscles, skin,bladder,uterus, stomach, etc.