Synapses and chemical transmission

Question 1

what is synaptic transmission

Answer 1

the process in which neighbouring neurons communicate

Question 2

how are signals in neutrons transmitted?

how are they transmitted in the synapse and by what?

Answer 2

electrically

chemically by neurotransmitters

Question 3

how is a message transmitted over a synapse 3 points

Answer 3

• it reaches terminal button
• sacks called vesicles are triggered by signal causing them to release neurotransmitters
• they travel across the synapse to the next neuron

Question 4

what happens when neurotransmitters arrive at next neuron

Answer 4

• it attaches to receptor sites in dendrites
• chemical message turned into electrical message
• neurotransmitters that are left are broken down by enzymes and reabsorbed into presynaptic neuron

Question 5

what is the
excitory effect
inhibitory effect

Answer 5

makes it more likely to fire

makes it less likely to fire

Question 6

what is summation in neutrons

Answer 6

• when a neutron receives several signals

- if there are more excitory messages than inhibitory it fires