Neurocommunication Flashcards
Antagonist drug is NOT taking effect by…
Increasing neurotransmitter production
All motor neurons are….neurons
Efferent
Which of the following is not neuroglia cell?
1. Purkinje
2. Astrocyte
3. Oligodendrocytes
4. Radial glia
- Purkinje cells
Microglia cells and astrocytes both remove waste. T/F
True
The ratio of neuroglia cell to neuron is 1:1. T/F
False
Oligodendrocyte cell is not the only type of neuroglia cell that forms the myelin sheath. T/F
True
Radial glia guide neuronal migration during embryonic development. T/F
True
The nervous system can be divided into….
The central nervous system & peripheral nervous system.
The ratio of neuroglia cell to neuron is 3:1 T/F
True
Microglia cells and astrocytes both remove waste T/F
True
Oligodendrocyte cell is the only type of neuroglia cell that builds myelin sheath. T/F
False
Radial glia guide neuronal migration in embryonic development T/F
True
Gap junction can be described as…
An organized collection of protein channels in cell membranes that allows an electrical exchange.
Schwann cells affect neurotransmission by..
Increasing the speed of action potential
Where are the Oligodendrocytes found?
Central nervous system
Oligodendrocyte cells affect neurotransmission by…
Increasing the speed of the action potential
Resting potential is the neuronal membrane potential without external stimuli T/F
True
Resting potential is the neuronal membrane potential during action potential. T/F
False
Neurotransmitters must be present within the presynaptic neuron. T/F
True
Neurotransmitters must inhibit postsynaptic neurons. T/F
False
Gap junctions exist in electrical synapses. T/F
True
Gap junctions exist in chemical synapses. T/F
False
Action potential is necessary for neurotransmitters to be released. T/F
False
The amount of Ca2+ influx is related to the amount of neurotransmitters being released. T/F
True
Nodes of Ranvier make action potential propagation feasible. T/F
True
Nodes of Ranvier are the sections of axons with thin wrap of myelin sheath. T/F
False
