Question

which of the following results from the release of the neurotransmitter dopamine into the nerve synapse ? - the presynaptic nerve fires an action potential -dopamine binds to receptor proteins on the membrane of the postsynaptic cell -dopamine enters the cytoplasm of the postsynaptic cell

Answer 1

The release of dopamine into the nerve synapse results in several effects.

1. The first result is that dopamine binds to receptor proteins on the membrane of the postsynaptic cell.

2. This binding then triggers the opening of pores in the membrane, which allows ions, such as sodium (Na+) and potassium (K+), to move across the membrane.

3. The influx of sodium and potassium ions then causes the membrane potential of the postsynaptic cell to change.

4. This change in membrane potential may cause the presynaptic nerve to fire an action potential, which ultimately results in the release of a neurotransmitter that will stimulate another cell further downstream.