What statement is NOT true about the length constant? is the distance along the dendrite from the site of current input to the site where Vm has decayed by 37% the decay of current by 37% over a specific segment along an axon the decay of membrane potential as a function of membrane and axial resistances the passive decay of current over distance

What statement is NOT true about the length constant? is the distance along the dendrite from the site of current input to the site where Vm has decayed by 37% the decay of current by 37% over a specific segment along an axon the decay of membrane potential as a function of membrane and axial resistances the passive decay of current over distance

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter4: Principles Of Neural And Hormonal Communication

Section: Chapter Questions

Problem 17RE

See similar textbooks

Similar questions

At the Nernst potential for Ca+, the current is 0. That must mean what? The potential difference across the membrane is 0 The electrical and chemical gradients are balanced Ca+ channels are closed None of the above
Compare the sodium current and potassium current when membrane potential is below the reversal potential, at the reversal potential and above the reversal potential of ACh current.
What property is responsible for the initial ramp of the membrane potential at the onset of the current pulse?A: Membrane capacitanceB: Membrane resistance explain your choice
Nodal (conductile) cells in the heart differ from other myocardiocytes (contractile cells) in that nodal cells have_____. A channels that allow Na+ to slowly leak in between action potentials B gap junctions while other myocardiocytes do not C more rapid depolarization in their action potentials due to voltage-gated Na+ channels D action potentials without plateau phases because they lack Ca+2 channels
A local anesthetic (Na+ channel blocker) should do which of the following Make the resting membrane potential more negative Decrease the after hyperpolarization Block the rising phase of the AP None of these
which of the following would be true (more than one can be true)? a) summation of A and X would reach threshold b) summation of C and A would be a graded potential c) stimulation by A would depolarize cell d) stimulation by B would be a subthreshold depolarization e) summation of B and C would be a graded potential with the net value of 12 mV depolarization
Why is it expected that input resistance and rheobase in a neuron would be very less correlated
Propagation of action potential and transmission mean: current flow along the cell membrane current flow through the synapse current flow using saltatory conduction all of the above
The membrane potential for an excitable cell membrane is -70 mV, for sodium ions the Nernst equilibrium potential is +50 mV, the conductivity of the single sodium channel is 10 pS. What is the electrochemical potential difference that is the driving force for sodium ions to migrate? How much current flows through an open sodium channel under these conditions?
What happens to the resting membrane potential if the extracellular K' concentration is increased. Select one: The resting membrane potential will become less negative. The resting membrane potential will not change. The resting membrane potential will become more negative.
At the membrane of an axón, the action potential is -60 mV for K+ ions. Calculate the external and internal concentration ratios.
Excericse affects your heart rate. Then describe how the action potential graph would change due to this situation( excercise ) . Discuss repolarization / hyperpolarization, and the time between action potential peaks.