Exhibitory & Inhibitory neurotransmitters

Question 1

Excitatory neurotransmitters

Answer 1

More likely to make the post-synaptic transmitter fire.

• Trigger nerve impulses in the receiving neuron and stimulate the brain into action
• e.g. adrenaline
• • charge

Question 2

Inhibitory neurotransmitters

Answer 2

Slows down nerve impulses in order to calm down the brain and balance mood.

• e.g. seretonin and GABA
• • charge

Question 3

Excitatory postsynaptic potential (EPSP)

Answer 3

An excitatory neurotransmitter binding with a postsynaptic receptor causes a positive charge in the neuron= more likely to fire

Question 4

Inhibitory postsynaptic potential (IPSP)

Answer 4

An inhibitory neurotransmitter binding with a postsynaptic receptor causes a negative charge in the neuron= less likely to fire

Question 5

Spatial summation

Answer 5

A large number of EPSPs are generated at different synapses on the same postsynaptic neuron at the same time.

Question 6

Temporal summation

Answer 6

A large number of EPSPs are generated at the same synapse by a series of high-frequency action potentials on the presynaptic neuron.

Question 7

Synaptic transmission

Answer 7

The process in which neighboring neurons communicate with each other by sending chemical messages across the synapse

Question 8

Neurotransmitter

Answer 8

Brain chemicals released from the synaptic vesicles

Question 9

Excitation

Answer 9

When a neurotransmitter (e.g. adrenaline) increases the positive charge of the postsynaptic neuron, increasing the likelihood of it passing on the electrical impulse