Synaptic Transmission^

Question 1

Transmission Process

Answer 1

presynaptic neuron
vesicle
- inside is the neurotransmitters
pre-synaptic membrane
synapse
complementary Receptor Sites
- NT binds
Post-synaptic neuron

Question 2

Inhibitory Effect

Answer 2

seratonin cause inhibition
neuron becomes negatively charges, less likely to fire
GABA - calm down body after stress

Question 3

Excitatory Effect

Answer 3

adrenaline causes excitation
increase its positive charge, more likely to fire
Caffeine - encourage dopamine to be release

Question 4

Summation

Answer 4

the effect (inhibitory/excitatory synaptic potential)
determined by adding up the inhibitory and excitatory neurons to see which is more dominant

Question 5

Types of Summation

Answer 5

Spatial Summation (spaced out)
- excitatory synaptic potential generated at many different synapses on the same post-synaptic neuron at the same time
Temporal Summation
- same synapse by series of high frequency action potential on the pre-synaptic neuron

Question 6

Neurotransmitters

Answer 6

travel in one direction (unidirectional)
complementary receptor sites bind them
Acetylcholine
- where a motor neuron meets a muscle
- upon a release it causes muscle contraction

Question 7

Node of Ranvier

Answer 7

Speed up transmission of impulse
Force it to jump across gaps

Question 8

Myelin Sheath

Answer 8

Protects axons
Speeds up impulse

Question 9

Vesicle

Answer 9

Helps transport the neurotransmitters

Question 10

Axon

Answer 10

Carries impulses away from cell body
Action Potential/ Electric Impulse
- Flows though axon