Quiz Neurons
18 Questions
| Total Attempts: 975
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How neurons communicate
Questions and Answers
- 1.How do neurons communicate?
- A.
Chemical methods
- B.
Electrical methods
- C.
Combination of both
- 2.An electrical gradient is the
- 3.Different composition of sodium and potassium is called concentration gradient
- A.
True
- B.
False
- 4.difference in charge between inside and outside (negative) is called the resting potential
- A.
True
- B.
False
- 5.When sodium are at ____, channels close ______ channel stays open
- 6.Sodium can come back in during rest (when cells are not charged)
- A.
True
- B.
False
- 7.Based on the charge, sodium wants to stay in because of the oppostite charge, but what makes it want to leave
- A.
Concentration gradient
- B.
Electrical gradient
- C.
Resting potential
- 8.When the cell resists the production of more action potentials this is called
- A.
Relative refractory period
- B.
Refractory period
- C.
Hyperpolarization
- 9.When a stronger than usual stimulus is needed this is called the relative refractory period
- A.
True
- B.
False
- 10.we need refractory period to keep action potential in opposite directions
- A.
True
- B.
False
- 11.When inside of cell gets more positive, which stimulates neuron this is called _______________ and is associated with ______
- 12.When the inside of the cell gets more negative this is called _________ which is associated with
- 13.More Na+ outside neuron than inside, less K+ outside neuron than inside is called concentration gradient
- A.
True
- B.
False
- 14.The action potential travels down neuron A’s axon via saltatory conduction. The action potential only travels in one direction because of
- A.
Electrical gradient
- B.
Concentration gradient
- C.
Refractory periods
- 15.Once the action potential reaches the end of theaxon this is called the ____________ terminals
- 16.Dendrites receive info
- A.
True
- B.
False
- 17.Axon sends info
- A.
True
- B.
False
- 18.Describe the all or none law
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