Neuroplasticity (section 1)

Question 0

What three things help define neuroplasticity?

Answer 0

1. Change their function
2. Change their chemical profile (neurotransmitters, receptors)
3. Change their structure (# and size of dendrites, soma size, etc)

Question 1

What is the ability for neurons to change?

Answer 1

Neuroplasticity

Question 2

Neuroplasticity is driven by what three things?

Answer 2

Genetic code
Experience (nurture)
Injury

Question 3

At what three places does neuroplasticity occur?

Answer 3

At thy synapse
In the axon
In the soma

Question 4

5 forms that plasticity can do at synapse?

Answer 4

Increased/decreased number of synaptic vesicles (presynaptic)
Increased/decreased number receptors (postsynaptic)
Change in type of receptor (postsynaptic)
Novel synapses
Pruning of established synapses

Question 5

What two forms does neuroplasticity take on in the axon?

Answer 5

Regenerative Sprouting

collateral sprouting

Question 6

In the soma, neuroplasticity takes form of?

Answer 6

Altered gene expression (protein synthesis, cell health or function)

Question 7

4 functional plastic changes due to neuroplasticity?

Answer 7

1. Strengthening of connections between neurons
2. Weakening or loss of connections between neurons
3. Novel connections
4. Cells becoming healthier (adaptation)

Question 8

What is Collateral Sprouting?

Answer 8

An intact axon will sprout a collateral branch to synapse on neurons it did not previously synapse on

Question 9

What is Regenerative sprouting

Answer 9

Proximal end of axon may reform a growth cone and restart the process of axon elongation.
Occurs in PNS only!