U3 AOS1 Dot Point 4

Question 1

what do neurotransmitters do

Answer 1

sent across the synapse so that neurons can communicate with each other

work by attaching to receptor sites of post-synaptic neurons

Question 2

what is reuptake

Answer 2

neurotransmitters that don’t bind to a dendrite get reabsorbed back into the presynaptic neuron’s terminal buttons to be recycled

Question 3

excitatory vs inhibitory

Answer 3

excitatory - stimulate postsynaptic neurons to perform their function

inhibitory - block or prevent postsynaptic neurons from firing

can also occur as hormones

Question 4

Glutamate

Answer 4

in the CNS
excitatory
associated with learning and memory
too much can overstimulate the brain

Question 5

GABA

Answer 5

inhibitory neurotransmitter
fine-tunes snd keeps it at the best level
low levels have been associated with anxiety, phobias, seizures

Question 6

Lock and key process

Answer 6

each neurotransmitter has a chemically distinct shape which matches with a receptor site

the binding unlocks the postsynaptic neuron’s response resulting in an excitatory or inhibitory response