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6 Apr 2018

The neurotransmitter GABA blocks presynaptic voltage-gated calcium channels. Consequently, GABA produces __________. a) presynaptic facilitation b) EPSPs c) presynaptic inhibition d) IPSPs

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Related questions

The initial depolarization associated with the action potential is the consequence of the opening of _________________ at the axon hillock.

A. voltage-gated calcium channels

B. voltage-gated potassium channels

C. voltage-gated chloride channels

D. voltage-gated sodium channels

From the following list, select all options that are correctwith respect to the synapse.

Question 5 options:

A)

the synapse is the site where the plasma membrane that coversthe axon terminal of one neuron makes direct contact with and fusesto the plasma membrane on the cell body or dendrite of anotherneuron
B)

the action potential travels through extracellular fluid in thesynapse to get from one neuron to the next
C)

presynaptic nerve terminals release chemical messengers into thesynapse in response to arrival of an action potential
D)

signaling molecules in the synapse can be broken down by enzymesthat are present on the post synaptic cell membrane
E)

signaling molecules in the synapse can bind to 're-uptake'receptors and be taken back into the presynaptic neuron forbreakdown or for repackaging/reuse
F)

signaling molecules can be taken into and degraded within thepostsynaptic cell
G)

signaling molecules in the synapse function as chemicalmessengers that regulate the opening of ligand-gated channels inthe plasma membranes of post synaptic cells

5. Explain the role of the following in transmitting an action potential across the synapse: a. synaptic terminal of presynaptic neuron b. synaptic cleft c. neurotransmitter d. postsynaptic neuron receptor Please try to explain it as best as you can and how each of these play a part in simple terms... Thank you. PLEASE DO NOT WRITE IN CURSIVE. MAKE SURE YOUR HANDWRITING IS ACTUALLY LEGIBLE

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