Which of the following are involved inproper signaling at excitatory synapses:○ An active process that depends onneurotransmitter reuptakeO An active process that depends on theCa2+ gradient○ A passive process that depends on the Cl-gradient○ Two of the answer choicesO All the choices are correct

Here's a breakdown of each choice:1. An active process that depends on neurotransmitter…

Answered: Which of the following are involved in…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Similar questions

In the dark, bipolar cells are O inactive due to open Cl- channels active due to open Na+ channels inactive due to closed Ca++ channels active due to open Ca++ channels
What causes Hyperpolarization following the spike of the action potential? Voltage-gated K+ channels close slowly allowing K+ ions to leave the cell The opening of leaky Na+ channels The Na+/K+ pump briefly reverses the direction of ion flow Both Na+ channels and K+ channels become inactivated Na+ and Cl- enter the cell until the Na+/Cl- pump closes
Which type and speed of slow axonal transport moves distinct polypeptides to the neuronal periphery? SCa 0.1 to 1mm/day SCa 1 to 3mm/day SCb 1 to 3mm/day SCc 0.1 to 100mm/day
Refer to the figure below to explain the mediation of action potentials by neurons using sodium and potassium channels at each of the six timepoints indicated.
A post-synaptic cell receives a signal that causes it to hyperpolarize. Which statement is NOT true about this dynamic? O The cell is now more negative than it was before. This describes an EPSP It will be harder for the cell to reach threshold and generate a new action potential. O This could have been achieved through either spatial or temporal summation.
At a chemical synapse, what happens? O action potentials are propagated more quickly than at an electrical synapse O the postsynaptic neuron converts an electrical signal into a chemical signal O the presynaptic neuron converts an electrical signal into a chemical signal O two cells communicate directly via connections at gap junction O there is a synaptic delay of about 3 seconds as the neurotransmitter crosses the synaptic cleft < Previous
In the glutamate-glutamine cycle, which of the following occurs? O Glutamate and GABA are released by astrocytes and taken up by nearby neurons O Microglia scavenge glutamate and GABA from the synapse ОО Ammonia is produced by glia as a byproduct of the cycle O Glutamine is released by astrocytes and taken up by nearby neurons Glutamine synthetase is found exclusively in microglia
Order the following events that occur during a nerve impulse. a few milliseconds behind the Na channels, K channels open and allow K into the cell (-70 mV) Na voltage-gated channel opens and Na leaves the cell (-55 mV) some stimulus is detected (-70 mV) more Na outside the cell causes other nearby Na channels to open (+35 mV) the cell rebalances the Na and K ions in preparation for the next impulse (~3-4ms)
There are a broad range of anti-epileptic medications currently on the market, with different therapies prescribed for different types and severities of the condition. Given what you have learned about synaptic transmission, which of the following could be a potential therapeutic approach to prevent the spreading of neuronal excitation? (3 correct answers, select all that apply) O A voltage-gated calcium channel blocker/inhibitor selective to glutamate-releasing neurons. O A voltage-gated calcium channel blocker/inhibitor selective to GABA-releasing neurons. O A glutamate receptor blocker (antagonist). O A GABA receptor antagonist. O A glutamate reuptake inhibitor. O A GABA reuptake inhibitor.
Which of the following changes would increase serotonin (5-HT) signaling between neurons? Select all that apply; partial point deduction for incorrect choices. O increase in serotonin synthesis O increase in the number of facilitating interneurons O decrease of serotonin receptors in the post-synaptic neuron inhibition of serotonin reuptake transporters O increase in activity of serotonin reuptake transporters O faulty transport and docking of synaptic vesicles decrease in serotonin synthesis O increase of serotonin receptors in the post-synaptic neuron
Two branching dendritic arbors are stimulated at the same exact time at locations A & B which are both 10 um away from the axon hillock. Upon stimulation, location A depolarizes 20 mV and location B depolarizes 15 mV. The time constant is the same in both dendrites. The length constant in both dendrites is 10 um. The RMP is -70 mV and the threshold to fire an action potential is -55 mV. Based on the above information, does the neuron fire an action potential? Explain your answer.

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