CONNECTING THE ACTION POTENTIAL TO NEUROTRANSMITTERS

Question 1

Excitatory Neurotransmitters will attempt to _ _ an action potential

Answer 1

start

Question 2

Excitatory NTs cause a _ _ in the nerve they are released onto. Two (or more) of these depolarizations may be summated to create an action potential.

Answer 2

DEPOLARIZATION

Question 3

They cause depolarizations because their receptors are Gated _____ channels.

Answer 3

Na+

Question 4

When an excitatory NT binds to its receptor and opens it, sodium ________the postsynaptic nerve cell. Since the cell is _____________ positive charges
(the Na+), this creates a depolarization (a small positive charge).

Answer 4

answers

gaining

Question 5

*Excitatory Neurotransmitters do NOT automatically create _ _ _ _.

Answer 5

action potentials

Question 6

The depolarizations they create must _______________________and reach
____________ to make an action potential.

Answer 6

add (summate)

threshold

Question 7

Inhibitory Neurotransmitters _ _ action potentials from being made

Answer 7

prevent

Question 8

Inhibitory NTs cause a _ _ in the nerve they are released onto. This acts to stop or keep an action potential from occurring.

Answer 8

HYPERPOLARIZATION

Question 9

They cause hyperpolarizations because their receptors are Gated _____ channels

Answer 9

K+

Question 10

When an inhibitory NT binds to its receptor and opens it, potassium _________the postsynaptic nerve cell. Since the cell is ____________positive charges (the K+), this creates a hyperpolarization (a small negative charge).

Answer 10

exits

losing

Question 11

This hyperpolarization (small - charge) can _          _ out a depolarization (small + charge) if it is also present. That’s how it can stop a depolarization from becoming an action 
potential.

Answer 11

cancel