Cell Communication + Stability
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17 Terms
what are the 4 types of membrane proteins
transporters
anchors
receptors
enzymes
3 types of cell junctions
occluding
anchoring
communicating
what do occluding junctions do
prevent molecules from going from one side of a layer of cells another
what do anchoring junctions do
mechanical attachment
what do communicating junctions do
allows chemical + electrical signals to move b/w cells
Draw a tight junction
what type of junction is a tight junction
occluding
draw an adeheren cell-cell anchoring jxn
draw a desmosome cell-cell anchoring jxn
draw a focal adhesion cell-ecm jxn
what are focal adhesions critical for
cell movement
what do hemi-desmosomes do
stability/stationary
draw a hemi-desmosome cell-ecm jxn
which junctions have actin vs intermediate filaments
actin: focal adhesion, adherens, tight
intermediate: hemi-desmosome, desmosomes
what kind of jxn do most cells (besudes a skeletal muscle) communicate with?
gap jxn
what is 1 conexon made of
6 conexins
what is the diameter/width of a gap jxn?
2-4nm
