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TLS Online TPP Program

#Id: 5268

SA node has an unstable resting membrane potential.

The “resting membrane potential” of the sinus nodal fiber between discharges has a negativity of about −55 to −60 millivolts.

#Unit 7. System Physiology – Animal #Cardiovascular System #Part B Pointers
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TLS Online TPP Program

#Id: 1440

#Unit 4. Cell Communication and Cell Signaling

Desmosomes
Function- Strength, durability, signaling
TLS Online TPP Program

#Id: 1441

#Unit 4. Cell Communication and Cell Signaling

Hemidesmosomes
Adhesion type- Cell-matrix
Cytoskeletal attachment- Intermediate filaments
TLS Online TPP Program

#Id: 1442

#Unit 4. Cell Communication and Cell Signaling

The principal ECM adhesion receptor in epithelial hemidesmosomes is integrin α6β4.
TLS Online TPP Program

#Id: 1443

#Unit 4. Cell Communication and Cell Signaling

Hemidesmosomes
Function- Shape, rigidity, signaling
TLS Online TPP Program

#Id: 1444

#Unit 4. Cell Communication and Cell Signaling

Focal adhesions 
Adhesion type- Cell-matrix
Adhesion receptors- Integrins
Cytoskeletal attachment- Actin filaments
TLS Online TPP Program

#Id: 1445

#Unit 4. Cell Communication and Cell Signaling

Focal adhesion
Function- Shape, signaling, force transmission, cell movement