Question

action potentials characteristically_______
A. are triggered by a rise in membrane voltage above a threshold
B. vary in frequency depending on the size of the stimulus
C. are triggered by opening of voltage gated potassium ion channels
D. have the same amplitude in a cell.
( its more than one answer)

2. Neurotransmitters are received by _____ membranes of the _______ by the receptors that are _______.

Answer 1

@Rushwr @toxicsugar22 anyone?