Real Updates
What is the action of acetylcholine and where is the site of action? ANS Action Site: Excitatory
Neuromuscular junction some CNS pathways
Acetylcholinesterase inhibitors, often used to treat neurobiological disorders: ANS Increase synaptic
Transmission
Researchers find a compound that when applied to neurons, activates a protein involved in vesicle fusion
with a presynaptic membrane. This compound would: ANS Increase synaptic transmission
Resting Potential ANS Na- and K- channels are closed
K- is concentrated inside the cell
Depolarization ANS Na- channels open in response to a stimulus
Na-rushes into the cell
Repolarization ANS Na- channels close and K- channels open
K- rushes out of the cell
Hyperpolarization ANS Na- and K- channels are closed
Sodium/potassium pump moves Na- out and K- in
Steps that Occur when an action Potential reaches the axon terminal ANS 1. Action potential
(depolarization) opens voltage gated Ca++ channels