Answer the question using the accompanying figure. At which point in this action potential diagram does the KS1U1P1+S1S1P0channel close to stabilize the membrane potential?

A) ?A B) ?B C) ?C D) ?D E) ?E A) ?A B) ?B C) ?C D) ?D E) ?E E

Answer the question using the accompanying figure. At which point in this action potential diagram are many NaS1U1P1+S1S1P0 activation gates open and KS1U1P1+S1S1P0 activation gates closed?

A) A B) B C) ?C D) ?D E) ?E A) A B) B C) ?C D) ?D E) ?E

Match between columns Premises: plasma membrane of postsynaptic cell

The Answer of E and A and is...

Exam 39: Information Flow and the Neuron

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Answer the question using the accompanying figure. At which point in this action potential diagram does the K⁺channel close to stabilize the membrane potential?

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Question 1

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Explain how the resting membrane potential and resting ion distributions are established in a neuron.

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Question 2

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A resting membrane potential of - 70 mV is established due to the unequal distribution of ions across the neuron plasma membrane. Na⁺/K⁺ pumps accumulate Na⁺ outside the plasma membrane and K⁺ inside the plasma membrane, while the presence of negatively charged anions inside the cell give the inside of the plasma membrane an overall negative charge relative to the outside.

Which neuronal structure has the greatest density of voltage-gated Na⁺ channels, resulting in the lowest threshold potential along a neuron?

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Question 3

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Which neurotransmitter is most likely to be inhibitory?

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Question 4

Otto Loewi demonstrated that neurons transmit signals across synapses by ____.

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Question 5

Electrical synapses are most common in the ____.

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Question 6

Answer the question using the accompanying figure. At which point in this action potential diagram are many Na⁺ activation gates open and K⁺ activation gates closed?

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Question 7

When a neuron membrane potential goes below its resting value it becomes ____.

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Question 8

EPSPs can form due to the diffusion of Na⁺ across a neuron plasma membrane.

(True/False)

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Question 9

Depolarization occurs due to the diffusion of K ⁺ across a neuron plasma membrane.

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Question 10

Oligodendrocytes are responsible for myelinating central nervous system axons.

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Question 11

The additive effect of one neuron sending many EPSPs to another neuron over a brief period of time is called spatial summation .

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Question 12

Figure 39.2
Answer the questions using the accompanying figure. Identify the structures at a synapse.

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plasma membrane of postsynaptic cell

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plasma membrane of postsynaptic cell

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Question 13

In humans and some primates, the most abundant neurons are the ____.

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Question 14

When an action potential reaches the axon terminal, the ____ channels are activated to trigger synaptic vesicle release.

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Question 15

Explain how neuron action potential propagation rate can be increased.

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Question 16

Saltatory conduction is the slowest form of action potential propagation.

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Question 17

To which class of neurotransmitters does dopamine belong?

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Question 18

Calculate E_Na for a neuron that has an extracellular concentration of Na⁺ of 78 mM and an intracellular concentration of Na⁺ of 6 mM.

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Question 19

Which sequence of the neural signaling pathway is correctly arranged from the earliest to the latest event as it occurs in the nervous system?

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Question 20

Showing 1 - 20 of 100

Exam 39: Information Flow and the Neuron

Answer the question using the accompanying figure. At which point in this action potential diagram does the K+channel close to stabilize the membrane potential?

Explain how the resting membrane potential and resting ion distributions are established in a neuron.

Which neuronal structure has the greatest density of voltage-gated Na+ channels, resulting in the lowest threshold potential along a neuron? ​

Which neurotransmitter is most likely to be inhibitory? ​

Otto Loewi demonstrated that neurons transmit signals across synapses by ____. ​

Electrical synapses are most common in the ____. ​

Answer the question using the accompanying figure. At which point in this action potential diagram are many Na+ activation gates open and K+ activation gates closed?

When a neuron membrane potential goes below its resting value it becomes ____. ​

EPSPs can form due to the diffusion of Na+ across a neuron plasma membrane.

Depolarization occurs due to the diffusion of K + across a neuron plasma membrane.

Oligodendrocytes are responsible for myelinating central nervous system axons. ​

The additive effect of one neuron sending many EPSPs to another neuron over a brief period of time is called spatial summation .

In humans and some primates, the most abundant neurons are the ____. ​

When an action potential reaches the axon terminal, the ____ channels are activated to trigger synaptic vesicle release. ​

Explain how neuron action potential propagation rate can be increased.

Saltatory conduction is the slowest form of action potential propagation.

To which class of neurotransmitters does dopamine belong? ​

Calculate ENa for a neuron that has an extracellular concentration of Na+ of 78 mM and an intracellular concentration of Na+ of 6 mM. ​

Which sequence of the neural signaling pathway is correctly arranged from the earliest to the latest event as it occurs in the nervous system? ​

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Answer the question using the accompanying figure. At which point in this action potential diagram does the K⁺channel close to stabilize the membrane potential?

Which neuronal structure has the greatest density of voltage-gated Na⁺ channels, resulting in the lowest threshold potential along a neuron?

Which neurotransmitter is most likely to be inhibitory?

Otto Loewi demonstrated that neurons transmit signals across synapses by ____.

Electrical synapses are most common in the ____.

Answer the question using the accompanying figure. At which point in this action potential diagram are many Na⁺ activation gates open and K⁺ activation gates closed?

When a neuron membrane potential goes below its resting value it becomes ____.

EPSPs can form due to the diffusion of Na⁺ across a neuron plasma membrane.

Depolarization occurs due to the diffusion of K ⁺ across a neuron plasma membrane.

Oligodendrocytes are responsible for myelinating central nervous system axons.

In humans and some primates, the most abundant neurons are the ____.

When an action potential reaches the axon terminal, the ____ channels are activated to trigger synaptic vesicle release.

To which class of neurotransmitters does dopamine belong?

Calculate E_Na for a neuron that has an extracellular concentration of Na⁺ of 78 mM and an intracellular concentration of Na⁺ of 6 mM.

Which sequence of the neural signaling pathway is correctly arranged from the earliest to the latest event as it occurs in the nervous system?