When activated extracellularly, G protein-coupled receptors (GPCrs) initiate
A) transporters to uptake degraded neurotransmitters for recycling.
B) a G protein signaling mechanism outside the cell.
C) a G protein signaling mechanism inside the cell.
D) the release of neurotransmitter molecules into the synaptic cleft.
Correct Answer:
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Q1: When an action potential arrives at the
Q2: The neurologist Otto Loewi's pivotal discovery was
Q3: The _ receptor uses a system of
Q5: Muscarinic receptors are
A) all inhibitory.
B) metabotropic.
C) all
Q6: Which chemical is not a monoamine neurotransmitter?
A)
Q7: Two _ opioids are_-enkephalin and leu-enkephalin.
A) exogenous;
Q8: Two types of acetylcholine receptors are called
Q9: GABA receptors are
A) inhibitory.
B) all ionotropic.
C) all
Q10: The _ system is a dopamine-containing projection
Q11: The neurotransmitter _ is found in nuclei
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