For a cochlear hair cell bathed in the endolymph of the inner ear, the external K+ concentration is 100mM while the internal K+ concentration is 10mM. Recall: VK = 61.5mV/z x log10 Co/Ci Assuming K+ channels are open, what movement of K+ will occur if the cell's membrane potential is experimentally shifted briefly to 30.75 mV? O K+ will move into the cel| O There will be no net movement of K+ across the membrane O K+ movement cannot be determined from the information given. O K+ will move out of the cell
For a cochlear hair cell bathed in the endolymph of the inner ear, the external K+ concentration is 100mM while the internal K+ concentration is 10mM. Recall: VK = 61.5mV/z x log10 Co/Ci Assuming K+ channels are open, what movement of K+ will occur if the cell's membrane potential is experimentally shifted briefly to 30.75 mV? O K+ will move into the cel| O There will be no net movement of K+ across the membrane O K+ movement cannot be determined from the information given. O K+ will move out of the cell
Biomedical Instrumentation Systems
1st Edition
ISBN:9781133478294
Author:Chatterjee
Publisher:Chatterjee
Chapter3: Biosignals And Noise
Section: Chapter Questions
Problem 3RT
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Voltage Gated Channels
Voltage gated Channels are a type of passive transport i.e. no energy is expended for this kind of transport and in-fact these kind of transport only happens if the Gibbs free energy of transport () is a negative value. The voltage gated potassium ion channel is an example for this kind of transport. Generally, the potassium concentration is greater inside of a cell compared to the outside but here in the cochlear hair cells its the opposite.
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