Week 10

1. 1What is the resting membrane potential?

   1. A-50mV
   2. B+30mV
   3. C-70mV
   4. D-80mV
2. 2At rest, the inside of the neuron is

   1. Anegative due to many potassium ions
   2. Bnegative due to protein and chlorine ions
   3. Cpositive due to sodium ions
3. 3In order for an action potential to occur where does the positive or negative charge come from

   1. Athe extracellular fluid
   2. Bthe intracellular fluid
   3. Cother neurons outside the cell
   4. Dthe axon hillock
4. 4How is the RMP restored?

   1. ABy the sodium potassium pump
   2. BBy the sodium potassium pump and open potassium channels
   3. CBy the sodium potassium pump and open sodium channels
   4. DBy proteins and chloride entering the cell
5. 5The myelin sheaths that are positioned along the axon in order to help the action potential to move fast down the length of the axon are also known as

   1. Aglial cells
   2. Bschwann cells
   3. Coligodendrocytes
   4. Dnodes of ranvier
6. 6The process of propagation of the action potential along myelinated neurons is

   1. Aaction potential
   2. Bconcentration gradient
   3. Csaltatory conduction
   4. Delectrical gradient
7. 7There are 4 neurons sending information to another all at once. Neuron 1 and 2 send a positive charge and neuron 3 and 4 send a negative charge. The cell that is receiving the information ends up with -70mV. What will happen?

   1. Aan action potenital
   2. Ban inhibitory post synaptic potential
   3. Can excitatory post synaptic potential
   4. Dresting membrane potential
8. 8neural integration occurs in

   1. Athe cell body
   2. Bthe axon
   3. Cthe dendrites and terminal buttons
   4. Dthe axon hillock
9. 9A neuron will only fire if the hillock has an overall increase in positive charge which exceeds

   1. Athe resting membrane potential
   2. Bthe inhibitory threshold
   3. Cthe excitatory threshold
   4. Dthe absolute refractory period
10. 10Temporal summation occurs when

    1. Aseveral impulses from different neurons over time
    2. Bseveral impulses from one neuron over time
    3. Cimpulses from several neurons at the same time

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PSY236 Quiz sobre Week 10, criado por Jaci Anna em 18-10-2017.

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Jaci Anna

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