An EPSP is a(n)____.
A)graded depolarization
B)depolarization with a rebounding hyperpolarization
C)graded hyperpolarization
D)action potential in a reflex arc

Question

An EPSP is a(n)____.​
A)graded depolarization
B)​depolarization with a rebounding hyperpolarization
C)​graded hyperpolarization
D)action potential in a reflex arc

Quizplus · Accepted Answer

An EPSP, or excitatory postsynaptic potential, is a graded depolarization that results from the binding of a neurotransmitter to a receptor on the postsynaptic membrane, causing channels to open and allowing positively charged ions to flow into the cell, bringing the membrane potential closer to threshold for generating an action potential. A rebounding hyperpolarization would be seen with an IPSP (inhibitory postsynaptic potential), and an action potential in a reflex arc is not an EPSP.

An EPSP Is A(n)____.​

An EPSP Is A(n)____.