What causes the absolute refractory period and what causes the relative refractory period during an actual...
Homework Answers
Absolute refractory periods are related to sodium gated channels. When these channels open, sodium rushes into a cell which leads to membrane potential becoming more positive. During this, gated channels first open and after a short time, they become inactive. When we stimulate the axon, we get an action potential and gated channels open and then we cannot stimulate the axon again.
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Relative refractory period is cause when voltage-gated potassium channels open and potassium ions rush out of the cell. After this, voltage-gated sodium channels start being reset to their closed state.So, In relative refractory period, gated channels reset and we will need a strong potential to simulate the axon again.
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What causes the absolute refractory period and what causes the
relative refractory period during an actual...
D SCAN MATCHING 1. Depolarization 2. Action potential 3. Threshold 4. Repolarization 5. Relative refractory period...
D SCAN MATCHING 1. Depolarization 2. Action potential 3. Threshold 4. Repolarization 5. Relative refractory period 6. Absolute refractory period 7. Resting membrane potential 8. Continuous conduction 9. Saltatory conduction Choices A. a cell whose internal environment has an electrical charge equal to its external environment B. the process of a cell becoming positively charged C. the process of a cell becoming negatively charged D. an electrochemical change in the potential across a membrane that causes an electrical signal to...
After a fraction of a second, K+ voltage gated channels at the site of the original...
After a fraction of a second, K+ voltage gated channels at the site of the original stimulus open. K+ is more concentrated (outside/inside) the cell; therefore, K+ diffused (in/out). This causes the inside of the membrane to become more negative and return to its resting potential of -70 mV. The process is known as (de/re) polarization. In fact, outflow of K+ may be so great that (de/re/hyper) polarization occurs in which membrane potential becomes closer to (-50, -90 ) mV....
All of the following are true about the refractory period in cardiac muscle, except A. it...
All of the following are true about the refractory period in cardiac muscle, except A. it results from the plateau phase of the action potential. B. it is much longer than the refractory period in skeletal muscle. C. it is observed in both contractile and autorhythmic cardiocytes. D. it prevents complete tetanus. E. it prolongs the action potential until the muscle cell has begun to relax.
draw and denote the configuration/shape of the voltage-gated Na+ and K+ channels at: resting potential just...
draw and denote the configuration/shape of the voltage-gated Na+ and K+ channels at: resting potential just after threshold +30mv repolarization (during absolute refractory period repolarization (during relative refractory period) hyperpolarization
A static budget is one that Is based on the actual sales volume achieved during the...
A static budget is one that Is based on the actual sales volume achieved during the period. Is developed for a single level of expected output. Is one component of the operating budget. Is always used to compare with the actual results. Materiality can be measured in terms of Absolute dollars. Relative percentages. Both absolute dollars and relative percentages. Neither absolute dollars or relative percentages. The flexible budget variance is the difference between The static budget and the flexible budget....
Describe what’s happening in each phase- (is the cell negative or positive, where are the ions...
Describe what’s happening in each phase- (is the cell negative or positive, where are the ions moving) Resting membrane potential Depolarization Repolarization Hyperpolarization Relative refractory period Absolute refractory period
5. Sketch a typical neuronal action potential (AP), and describe the important events or conditions that...
5. Sketch a typical neuronal action potential (AP), and describe the important events or conditions that drive or are otherwise associated with: a. b. c. d. e. f. g. Reaching threshold for the AP at the base of the upswing The high slew (steep slope) portion of the upswing The peak The rapid reversal of potential The overshoot The absolute refractory period The relative refractory period
What is the difference between an absolute and a relative link? What are the advantages and...
What is the difference between an absolute and a relative link? What are the advantages and disadvantages of using each type? Can you give an example of how you would use an absolute link and a relative link on a website? I look forward to your reply.
Draw an action potential on a graph showing the x-axis and y-axis with proper labels and...
Draw an action potential on a graph showing the x-axis and y-axis with proper labels and numbers (the numbers are approximate as they may vary slightly from neuron to neuron). A. Describe the ionic conductances that underlie the action potential including gating of the specific ion channels at threshold, rising phase, falling phase and the undershoot phase. Explain threshold, absolute refractory period and relative refractory period in relation to the action potential. B. C. Sodium and potassium currents demonstrate very...
steps that occur at a chemical synapse. Describe in detail all of the steps of an...
steps that occur at a chemical synapse. Describe in detail all of the steps of an action potential (you can describe this in words only, a drawing with descriptive words or both). Also, describe the difference between absolute and relative refractory periods and discuss when during the action potential each takes place.
D SCAN MATCHING 1. Depolarization 2. Action potential 3. Threshold 4. Repolarization 5. Relative refractory period 6. Absolute refractory period 7. Resting membrane potential 8. Continuous conduction 9. Saltatory conduction Choices A. a cell whose internal environment has an electrical charge equal to its external environment B. the process of a cell becoming positively charged C. the process of a cell becoming negatively charged D. an electrochemical change in the potential across a membrane that causes an electrical signal to...
After a fraction of a second, K+ voltage gated channels at the site of the original stimulus open. K+ is more concentrated (outside/inside) the cell; therefore, K+ diffused (in/out). This causes the inside of the membrane to become more negative and return to its resting potential of -70 mV. The process is known as (de/re) polarization. In fact, outflow of K+ may be so great that (de/re/hyper) polarization occurs in which membrane potential becomes closer to (-50, -90 ) mV....
5. Sketch a typical neuronal action potential (AP), and describe the important events or conditions that drive or are otherwise associated with: a. b. c. d. e. f. g. Reaching threshold for the AP at the base of the upswing The high slew (steep slope) portion of the upswing The peak The rapid reversal of potential The overshoot The absolute refractory period The relative refractory period
Draw an action potential on a graph showing the x-axis and y-axis with proper labels and numbers (the numbers are approximate as they may vary slightly from neuron to neuron). A. Describe the ionic conductances that underlie the action potential including gating of the specific ion channels at threshold, rising phase, falling phase and the undershoot phase. Explain threshold, absolute refractory period and relative refractory period in relation to the action potential. B. C. Sodium and potassium currents demonstrate very...
steps that occur at a chemical synapse. Describe in detail all of the steps of an action potential (you can describe this in words only, a drawing with descriptive words or both). Also, describe the difference between absolute and relative refractory periods and discuss when during the action potential each takes place.
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