Case 9
Learning goals:
1. What types of communication are there?
2. What kind of connections are there between cells?
3. Receptors
4. Explain electrical communication
5. Signal pathways
a. That require proteolysis, cleaved, phosphorylation
1
, 1. What kind of connections are there between cells?
Junctions = bonds between cells in which the cell communicates by
signals
- It is characterised by actin which is located on the cytoplasmic
surface
- They influence the shape and folding of the epithelial tissue
Gap junctions
- They connect the cytoplasm of two cells by forming little gates.
= connexons
- A connexon is built out of 6 connexins.
- A connexon of one membrane forms a channel with another
connexon of one membrane.
- The inside of the channels are hydrophilic.
- Connexons are on the basal side.
Tight junctions
- It is a watertight seal between cells.
- They are tightly held against each other by claudins.
- Mostly epithelial cells or tissue, on the most apical side.
2
Learning goals:
1. What types of communication are there?
2. What kind of connections are there between cells?
3. Receptors
4. Explain electrical communication
5. Signal pathways
a. That require proteolysis, cleaved, phosphorylation
1
, 1. What kind of connections are there between cells?
Junctions = bonds between cells in which the cell communicates by
signals
- It is characterised by actin which is located on the cytoplasmic
surface
- They influence the shape and folding of the epithelial tissue
Gap junctions
- They connect the cytoplasm of two cells by forming little gates.
= connexons
- A connexon is built out of 6 connexins.
- A connexon of one membrane forms a channel with another
connexon of one membrane.
- The inside of the channels are hydrophilic.
- Connexons are on the basal side.
Tight junctions
- It is a watertight seal between cells.
- They are tightly held against each other by claudins.
- Mostly epithelial cells or tissue, on the most apical side.
2
