Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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What can occur to the neurotransmitter after being released from the synaptic vesicle? Give a real life example of this.
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- Neuroactive drugs, such as the antidepressant fluoxetine, function by affecting the metabolism of the brain. After the neurotransmitter serotonin has crossed the syrupse and attached to the post- synaptic neuron, the serotonin is normally reabsorbed by the pre-synaptic neuron. Fluoxetine inhibits the reuptake of serotonin. allowing it to remain in the synapse much longer than normal A Synapse O a. Z O b. Y с. Х d. W W- Fluoxetine inhibits the process above labelled... Nerve impulsearrow_forwardName two ways by which neurotransmitter can be eliminatedarrow_forwardDescribe the four stages of an action potential in what is happening in each stagearrow_forward
- Draw a presynaptic and postsynaptic neuron at to demonstrate the release and acceptance of a neurotransmitter. Identify the following in your drawing: Ca2+, synaptic cleft, receptor, synaptic vessicle, SNARE, presynaptic neuron, postsynaptic neuronarrow_forwardWhat is a post-synaptic potential and how is it caused? Describe the two types of post-synaptic potentials that can occur. Within this context, what does excitatory and inhibitory mean?arrow_forwardExplain the mechanism by which action potentials are prevented from being propagated to a postsynaptic cell if transmitted across an inhibitory synapse.arrow_forward
- Starting with the action of a neurotransmitter at the postsynaptic end of a neuron, what happens to generate an action potential to a second neuron?arrow_forwardThe table of neurotransmitters below is too simplistic. In reality, one neurotransmitter chemical has multiple actions in the nervous system. How is this possible?arrow_forwardWhat could happen if a neurotransmitter level was too low or too high? Give an example.arrow_forward
- The following diagram represents a typical serotonergic synapse. Where, specifically, do antidepressants work (e.g. SSRI)? Neurotransmitter Neurotransmitter transporter Аxon Synaptic vesicle terminal Voltage- gated Ca?+ channel Synaptic cleft Receptor Postsynaptic density Dendrite Neurotransmitter Synaptic Vesicle Neurotransmitter transporter (aka Reuptake transporter) Receptor O All of the abovearrow_forwardExplain how an excitatory post-synaptic potential can lead to the generation of an action potential.arrow_forwardA neuron releases an excitatory neurotransmitter. Some neurons are stimulated and some are not. How is it possible that the same signal activates one neuron and not the other?arrow_forward
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