TLS Online TPP Program

#Id: 5675

#Unit 7. System Physiology – Animal

When the shorter stereocilia are pushed toward the taller ones, the open time of cation channels is increased

TLS Online TPP Program

#Id: 5676

#Unit 7. System Physiology – Animal

K+ & Ca2+ enter via the channel and produce depolarization

TLS Online TPP Program

#Id: 5677

#Unit 7. System Physiology – Animal

When the stereocilia are pushed toward the kinocilium, the membrane potential is decreased to about –50 mV.

TLS Online TPP Program

#Id: 5678

#Unit 7. System Physiology – Animal

The K+ that enters hair cells via the mechanically-sensitive cation channels is recycled. In the cochlea, K+ eventually reaches the stria vascularis and is secreted back into the endolymph, completing the cycle

TLS Online TPP Program

#Id: 5679

#Unit 7. System Physiology – Animal

Cells in the stria vascularis have a high concentration of Na+-K+ ATPase

 

TLS Online TPP Program

#Id: 5680

#Unit 7. System Physiology – Animal

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