PHYSIOLOGY
NEUROTRANSMISSION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
The firing of a neuron is also called
|
|
depolarization
|
|
|
an action potential
|
|
|
both of the above
|
|
|
none of the above
|
Explanation:
Detailed explanation-1: -The action potential is an explosion of electrical activity that is created by a depolarizing current. This means that some event (a stimulus) causes the resting potential to move toward 0 mV. When the depolarization reaches about-55 mV a neuron will fire an action potential. This is the threshold.
Detailed explanation-2: -Summary: Neurons are complicated, but the basic functional concept is that synapses transmit electrical signals to the dendrites and cell body, and axons carry signals away. In one of many surprise findings, scientists have discovered that axons can operate in reverse: they can send signals to the cell body, too.
There is 1 question to complete.