In neurons, potassium ions are maintained at high concentrations within the cell while sodium ions are maintained at high concentrations outside of the cell. A nerve impulse that reaches the axon terminal causes an influx of calcium ions into the. The vesicles then fuse with the plasma membrane, a process facilitated by proteins called snares and synaptotagmin, resulting in the expulsion of.
Axon Model Labeled
The release of dopamine from axons and dendrites occurs via vesicular exocytosis;
Dopamine is synthesized inside the axon terminal.
However, the mechanisms that regulate exocytosis may differ between the two sites (rice et. This study used electrochemical and electrophysiological methods to compare the time course and calcium dependence of somatodendritic dopamine release in the ventral. The authors focused on dopaminergic neurons (dans) in the midbrain, which release dopamine (da) across the forebrain and basal ganglia via axonal projections. When an action potential reaches the axon terminal, it triggers the opening of voltage.
This study used electrochemical and electrophysiological methods to compare the time course and calcium dependence of somatodendritic dopamine release in the ventral. It is then stored in vesicles. The cell possesses potassium and. The cell possesses potassium and.
Vesicular exocytosis is the process by which an axon releases dopamine outside the body.
