(Solved) The Neuro system... SYNAPTIC TRANSMISSION?

ilikebigbutts

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11 years ago

The Neuro system... SYNAPTIC TRANSMISSION?

1. What channels in the presynaptic neuron open up in response to an action potential?

2. The presence of what ion inside the cell causes the synaptic vesicles to fuse with the membrane?

3. a. What is the name for the chemicals stored in the synaptic vesicles?
b. What do these chemicals diffuse across?

c. Where do these chemicals bind to receptors?

4. What type of gated channels do these chemicals open?

5. Name two ways these chemicals can be removed from the synaptic cleft.

6. The response on the postsynaptic cell depends on two factors: what are they?

7. Autonomic nerves innervate what three things?

8. The most common excitatory neurotransmitter in the CNS is ?

9. Two major inhibitory neurotransmitters are?

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il0veu08

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11 years ago

3a. acetylcholine and calcium is stored
b. They diffuse across the synaptic cleft
5. acetylcholine is not removed but broken down by an enzyme called acetylcholinsterase.

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julie.t

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11 years ago

This verified answer contains over 240 words.

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bio_man

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juliar33

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11 years ago

Correction to mesmel on question #5. Transmitters are removed from the cleft by re-uptake into the presynaptic termianl or into glial cells, or they are broken down extracellularly. Most are taken back up, with the exception of acetylcholine and peptides. These are removed by enzymatic degradation.

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