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1. Draw a set of EPSPs and IPSPs that will initiate an action potential. You must...
Assume that a single Inhibitory Postsynaptic Potential (IPSP) has a negative magnitude of -0.5mV at the...
Assume that a single Inhibitory Postsynaptic Potential (IPSP) has a negative magnitude of -0.5mV at the axon hillock, and that a single Excitatory Postsynaptic Potential (EPSP) has a positive magnitude of +0.5mV. For a neuron with initial membrane potential of -70mV, calculate the net effect of the simultaneous arrival of 6 IPSPs and 2 EPSPs on the membrane potential. Show your work.
Graded potentials may: W. initiate an action potential. X. depolarize the membrane to the threshold voltage....
Graded potentials may: W. initiate an action potential. X. depolarize the membrane to the threshold voltage. Y. hyperpolarize the membrane. Z. be called EPSPs or IPSPs. Select one: a. if only W, X and Y are correct b. if only W and Y are correct c. if only X and Z are correct d. if only Z is correct e. if all are correct Feedback The correct answer is: if all are correct explanations all options plz abcde short answer
15. (1) Thempaa loitin ng Identify each phase 1-4. 16. (2) Membrane potential (mV) 17. (3)...
15. (1) Thempaa loitin ng Identify each phase 1-4. 16. (2) Membrane potential (mV) 17. (3) Threshold 18. (4) Time (ms) Permeability to which ion causes depolarization? Permeability to which ion causes repolarization? During repolarization, which channels are INACTIVATED? mV What is threshold potential? (in mV) mV What is the "OVERSHOOT"? (in mv) my What is the "UNDERSHOOT" or hyperpolarization? (in mV) 2 mV What is the resting membrane potential? (in mv) Is this a GRADED or ACTION potential? VOUS...
What is a resting potential? Is it positive or negative? The resting potential is mainly due...
What is a resting potential? Is it positive or negative? The resting potential is mainly due to the main _____-charged large molecules stuck inside the neuron. The Na+/K+ pump pushes Na+ _____ of the cell and K+ ____ of the cell (in or out for each ion) Where is K+ concentrated, inside or outside of the neuron? Where is Na+ concentrated, inside or outside of the neuron? The action potential starts with an rise in membrane voltage. This is due...
According to Scott Freeman, 1. Which of the 2 factors listed, best determine the membrane potential...
According to Scott Freeman, 1. Which of the 2 factors listed, best determine the membrane potential of a neuron? a. concentration gradient across the membrane b. charge gradient across the membrane c. the surface area of a neuronal membrane d. the threshold potential of the membrane 2. In a single neuron, what is the typical direction of signals? a. axon to dendrite to cell body b. dendrite to cell body to axon c. axon to cell body to dendrite 3....
Question 11 Not yet answered Marked out of 1.00 Flag question membrane potential (mV) ACTION POTENTIAL...
Question 11 Not yet answered Marked out of 1.00 Flag question membrane potential (mV) ACTION POTENTIAL threshold potential resting membrane potential depolarizing stimulus time (msec) STIMULUS What part of the action potential graph (indicated by Roman numerals) is mediated by delayed voltage-gated Na+ channels? Select one: O a. Il O b. I OC.IV O d. I and V Oe. Il and IV Question 12 Not yet answered Marked out of 1.00 Flag question +40 membrane potential (mv) ACTION POTENTIAL threshold...
According to Scott Freeman. answer the following questions 1. In a single neuron, what is the...
According to Scott Freeman. answer the following questions 1. In a single neuron, what is the typical direction of signals? a. axon to dendrite to cell body b. dendrite to cell body to axon c. axon to cell body to dendrite 2. For an action potential to occur, the membrane potential of a neuron must become_________, until it reaches the________. a1. more positive, b1. more negative a2. repolarization phase b2. resting membrane potential c2. threshold potential d2. hyperpolarization phase 3....
QUESTION 11 . THE RESTING POTENTIAL IS CAUSED BY . . A. . the rotation of...
QUESTION 11 . THE RESTING POTENTIAL IS CAUSED BY . . A. . the rotation of charged particles . . B. . the uneven distribution of ions inside and outside the cell . . C. . the release of ions by neighboring neurons . . D. . the axon hillock . 1 points QUESTION 12 . WHICH NEUROTRANSMITTER PLAYS A ROLE IN REINFORCEMENT AND ADDICTION . . A. . dopamine . . B. . acetyl choline . . C....
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...
Cell # 1 forms an excitatory synapse onto cell # 2 , when cell #1 fires a single action potential...
Cell # 1 forms an excitatory synapse onto cell # 2 , when cell #1 fires a single action potential it releases glutamate onto the membrane of cell #2 resulting in a 5 millivolt depolarization, a 5 mV excitatory postsynaptic potential, when cell #1 fires three action potentials in rapid succession this causes a 15 mV depolarization in cell #2 resulting in cell #2 reaching threshold and firing its own action potential. Cell #1 Cell #2 +40 Vm IN Cell...
15. (1) Thempaa loitin ng Identify each phase 1-4. 16. (2) Membrane potential (mV) 17. (3) Threshold 18. (4) Time (ms) Permeability to which ion causes depolarization? Permeability to which ion causes repolarization? During repolarization, which channels are INACTIVATED? mV What is threshold potential? (in mV) mV What is the "OVERSHOOT"? (in mv) my What is the "UNDERSHOOT" or hyperpolarization? (in mV) 2 mV What is the resting membrane potential? (in mv) Is this a GRADED or ACTION potential? VOUS...
Question 11 Not yet answered Marked out of 1.00 Flag question membrane potential (mV) ACTION POTENTIAL threshold potential resting membrane potential depolarizing stimulus time (msec) STIMULUS What part of the action potential graph (indicated by Roman numerals) is mediated by delayed voltage-gated Na+ channels? Select one: O a. Il O b. I OC.IV O d. I and V Oe. Il and IV Question 12 Not yet answered Marked out of 1.00 Flag question +40 membrane potential (mv) ACTION POTENTIAL threshold...
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...
Cell # 1 forms an excitatory synapse onto cell # 2 , when cell #1 fires a single action potential it releases glutamate onto the membrane of cell #2 resulting in a 5 millivolt depolarization, a 5 mV excitatory postsynaptic potential, when cell #1 fires three action potentials in rapid succession this causes a 15 mV depolarization in cell #2 resulting in cell #2 reaching threshold and firing its own action potential. Cell #1 Cell #2 +40 Vm IN Cell...
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