A unique electrogenic K + pump in the stria vascularis accounts for the fact that the scala media is electrically positive by 85 mV relative to the scala vestibuli

and scala tympani

 

TLS Online TPP Program

#Id: 8768

#Unit 1. Molecules and their Interaction Relevant to Biology

TLS Online TPP Program

#Id: 7603

#Unit 5. Developmental Biology

Two important acrosomal proteins  acrosin and MMP2 (matrix metaloproteinase-2)

TLS Online TPP Program

#Id: 9332

#Unit 4. Cell Communication and Cell Signaling

In bright light, little transducin is found in the outer segment, and abundant arrestin is found there; in this condition,vision is relatively insensitive to small changes in light.

TLS Online TPP Program

#Id: 10035

#Unit 4. Cell Communication and Cell Signaling

NF-κB signaling is turned off by negative feedback

regulation because one of the genes whose transcription is induced by NF-κB encodes I-κBα.

TLS Online TPP Program

#Id: 6618

#Unit 7. System Physiology – Animal