Option A.5: Neuropharmacology Flashcards Preview

HL Biology > Option A.5: Neuropharmacology > Flashcards

Flashcards in Option A.5: Neuropharmacology Deck (10):
1

Define action potential

the impulse that moves down the presynaptic neuron

2

What is the purpose of excitatory neurotransmitters?

to generate an action potential by increasing the permeability of the postsynaptic membrane to positive ions

3

What is an example of an excitatory neurotransmitter?

acetylcholine

4

What is an example of an inhibitory neurotransmitter?

GABA

5

What is the purpose of the inhibitory neurotransmitter?

inhibit action potentials by causing hyperpolarization of the neurone (the inside of the neuron becomes more negative)

6

Define fast-acting neurotransmitters

have an effect on the target cell within 1 millisecond of binding to a receptor

7

Define slow-acting neurotransmitters

have an effect on the target cell in hundreds of milliseconds or can take up to a minute

8

What are three examples of slow acting neurotransmitters?

dopamine, serotonin, and acetylcholine

9

What is another name for slow-acting NTs?

neuromodulators

10

How do slow acting NTs modulate fast-acting neurotransmitters? (2 ways)

can regulate the efficiency of neurotransmitter release from the presynaptic neuron
can regulate the efficiency of the postsynaptic neuron

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