- Question When Voltage Gated Sodium Channels Open In A Neuron What Happens To The Membrane Potential As A Result It Dep 1 (29.94 KiB) Viewed 76 times
- Question When Voltage Gated Sodium Channels Open In A Neuron What Happens To The Membrane Potential As A Result It Dep 2 (73.01 KiB) Viewed 76 times
- Question When Voltage Gated Sodium Channels Open In A Neuron What Happens To The Membrane Potential As A Result It Dep 3 (38.69 KiB) Viewed 76 times
- Question When Voltage Gated Sodium Channels Open In A Neuron What Happens To The Membrane Potential As A Result It Dep 4 (28.42 KiB) Viewed 76 times
- Question When Voltage Gated Sodium Channels Open In A Neuron What Happens To The Membrane Potential As A Result It Dep 5 (51.21 KiB) Viewed 76 times
- Question When Voltage Gated Sodium Channels Open In A Neuron What Happens To The Membrane Potential As A Result It Dep 6 (31.72 KiB) Viewed 76 times
QUESTION Why is the sodium-potassium pump important to the action potential? It causes there to be more sodium inside and more potassium outside of cells, which drives the flow of ions during the action potential. It causes there to be more sodium outside and more potassium inside of cells, which drives the flow of ions during the action potential. It equalizes the concentrations of sodium and potassium on both sides of the membrane, readying the neuron to fire an action potential. It excites the Nodes of Ranvier, so that the action potential can be regenerated down the axon.
QUESTION Which of the choices below reflects the correct order of changes in membrane potential as a hypothetical neuron goes from: rest; to the peak of the action potential; through the refractory period; and then returns to rest? 0 mV; +40 mV; +10 mV; 0 mV +40 mV; -40 mV; -50 mV; +40 mV -65 mV; +45 mV; -70 mV; -65 mV -65 mV; +45 mV; +100 mV; -65 mV
QUESTION Which level of organization of the nervous system is the most microscopic? Single neuron level Functional systems level Neuronal compartment level Circuit level
QUESTION In 1939, Nobel Laureates Alan Hodgkin and Andrew Huxley used giant squid axons to demonstrate that... ...neuronal cell membranes allowed charged particles to flow in and out in a predictable manner. ...neuronal cell membranes allowed charged particles to flow out but not in in a predictable manner. ...neuronal cell membranes allowed charged proteins to flow in but not out in a predictable manner. ...neuronal cell membranes allowed charged proteins to flow in and out in a predictable manner.
QUESTION Calcium imaging is a useful technique for studying neurons because... ...it can directly measure voltage fluctuations due to action. potentials. ...it is an indirect measure of information storage. ....it can indirectly measure neuronal activity. ...it is a direct measure of information storage.