Postsynaptic Events

Question 1

What is a ligand/chemical gated channel? Where are they located?

Answer 1

is a type of membrane ion that opens and closes and allow ions to pass through the membrane.

it located on the dendrites in the cell body on the cell membrane

Question 2

What happens after a neurotransmitter binds to a ligand/chemical gated channel?

Answer 2

The neurotransmitter is released and the gates open to allow ions to pass through

Question 3

How does an excitatory response differ from an inhibitory response?
Identify common ions that would be involved in an excitatory and/or an inhibitory potential.

Answer 3

EPSP polarizes neurotransmitter and is more likely to fire action potential while IPSP depolarizes neurotransmitters and is less likely to fire action potential

EPSP- Acetylcholine, Epi, Norepi, Glutamate, substance P

IPSP - Glycine, GABA and endorphins

Question 4

Define EPSP and IPSP. How do they relate to action potentials

Answer 4

EPSP is a depolarization.is a net movement of positive ions into the cell

IPSP is hyperpolarizing . negative.

EPSP polarizes neurotransmitter and is more likely to fire action potential while IPSP depolarizes neurotransmitters and is less likely to fire action potential