OCCTH 585 Test 1 Questions And Answers
Where in the cell do action potentials exist?
a) cell body
b) axons
c) dendrites
d) all of the above b) axons
Where in the cell is information received?
a) cell body
b) axons
c) dendrites
d) all of the above c) dendrites
Put the following steps of transmitting an action potential into the correct order.
a) Receptor molecules open up ion channels
, OCCTH 585 Test 1 Questions And Answers
b) Action potential activates synaptic bouton
c) Neurotransmitter diffuses across gap to postsynaptic cleft
d) Synaptic vesicles releases neurotransmitter into the synaptic cleft
e) Ions flow through into postsynaptic cell
f) Neurotransmitter binds to receptor molecule on postsynaptic cell b) Action potential
activates synaptic bouton
d) Synaptic vesicles releases neurotransmitter into the synaptic cleft
c) Neurotransmitter diffuses across gap to postsynaptic cleft
f) Neurotransmitter binds to receptor molecule on postsynaptic cell
a) Receptor molecules open up ion channels
e) Ions flow through into postsynaptic cell
True or False: Cells receive input from multiple sources coming onto the cell body and dendrites.
True.
What are 2 ways that one can change the properties of neurotransmission (forms of
neuroplasticity)? 1. Change in neurotransmitter release
2. Change in the size or shape of the post-synaptic potential
, OCCTH 585 Test 1 Questions And Answers
What are 3 forms of neuroplasticity that result in a change in cell properties? 1. Changing
size or shape of cell
2. Changing electrical properties (resistance)
3. Changing the leakiness of the membrane
What are the 3 overarching forms of neuroplasticity? 1. Change the properties of
neurotransmission
2. Change cell properties
3. Structural/anatomical changes in cells
True or False: the bulk of the (neuroplasticity) changes that we see in rehab are a result of
structural or anatomical changes in cells. False. (This form of neuroplasticity takes a lot of
time, and this is not the bulk of change that we will be seeing in rehab)
Unmasking is an example of which form of neuroplasticity?
a) Change the properties of neurotransmission
b) Change cell properties
c) Structural/anatomical changes in cells c) Structural/anatomical changes in cells
, OCCTH 585 Test 1 Questions And Answers
Which of the following is responsible for the phenomenon known as phantom limb syndrome?
a) unmasking
b) collateral sprouting
c) dendritic pruning
d) neurogenesis a) unmasking
How does dendritic pruning change the function of the cell? It changes the size and shape
of the cell, which therefore changes the function.
True or False: Dendritic pruning happens immediately after an injury. False. (it takes time,
as the dendrites will stay there for a while hoping that new inputs will come in and try to
connect)
Why does the body undergo dendritic pruning? Dendrites without input are metabolically
costly, and we don't want to waste energy sustaining something that is not contributing to
anything
Where in the cell do action potentials exist?
a) cell body
b) axons
c) dendrites
d) all of the above b) axons
Where in the cell is information received?
a) cell body
b) axons
c) dendrites
d) all of the above c) dendrites
Put the following steps of transmitting an action potential into the correct order.
a) Receptor molecules open up ion channels
, OCCTH 585 Test 1 Questions And Answers
b) Action potential activates synaptic bouton
c) Neurotransmitter diffuses across gap to postsynaptic cleft
d) Synaptic vesicles releases neurotransmitter into the synaptic cleft
e) Ions flow through into postsynaptic cell
f) Neurotransmitter binds to receptor molecule on postsynaptic cell b) Action potential
activates synaptic bouton
d) Synaptic vesicles releases neurotransmitter into the synaptic cleft
c) Neurotransmitter diffuses across gap to postsynaptic cleft
f) Neurotransmitter binds to receptor molecule on postsynaptic cell
a) Receptor molecules open up ion channels
e) Ions flow through into postsynaptic cell
True or False: Cells receive input from multiple sources coming onto the cell body and dendrites.
True.
What are 2 ways that one can change the properties of neurotransmission (forms of
neuroplasticity)? 1. Change in neurotransmitter release
2. Change in the size or shape of the post-synaptic potential
, OCCTH 585 Test 1 Questions And Answers
What are 3 forms of neuroplasticity that result in a change in cell properties? 1. Changing
size or shape of cell
2. Changing electrical properties (resistance)
3. Changing the leakiness of the membrane
What are the 3 overarching forms of neuroplasticity? 1. Change the properties of
neurotransmission
2. Change cell properties
3. Structural/anatomical changes in cells
True or False: the bulk of the (neuroplasticity) changes that we see in rehab are a result of
structural or anatomical changes in cells. False. (This form of neuroplasticity takes a lot of
time, and this is not the bulk of change that we will be seeing in rehab)
Unmasking is an example of which form of neuroplasticity?
a) Change the properties of neurotransmission
b) Change cell properties
c) Structural/anatomical changes in cells c) Structural/anatomical changes in cells
, OCCTH 585 Test 1 Questions And Answers
Which of the following is responsible for the phenomenon known as phantom limb syndrome?
a) unmasking
b) collateral sprouting
c) dendritic pruning
d) neurogenesis a) unmasking
How does dendritic pruning change the function of the cell? It changes the size and shape
of the cell, which therefore changes the function.
True or False: Dendritic pruning happens immediately after an injury. False. (it takes time,
as the dendrites will stay there for a while hoping that new inputs will come in and try to
connect)
Why does the body undergo dendritic pruning? Dendrites without input are metabolically
costly, and we don't want to waste energy sustaining something that is not contributing to
anything
