ANP 1106 - PHYSIOLOGY OF THE NERVOUS SYSTEM
UPDATED ACTUAL QUESTIONS AND CORRECT
ANSWERS
Question:
1. What does it mean that neurons are excitable?
Answer:
They respond to stimuli by generating electrical changes (depolarization)
Question:
2. Depolarization
Answer:
A short positive change in the membrane potential
Question:
3. Action potential
Answer:
"Nerve Impulse"; the change in electrical potential associated with the passage of
an impulse along the membrane of a muscle cell or nerve cell.
Question:
4. Where are the action potentials generated in a neuron?
Answer:
At the axon hillock (cell body region)
Question:
5. In which direction do action potentials travel?
Answer:
Down the axon
Question:
6. What is the basis of the action potential conduction?
Answer:
Electrical potentials across the axon (or muscle) membrane
Question:
7. What triggers a neuron to depolarize?
Answer:
A stimulus
, Question:
8. Basic Principles of Electricity
Answer:
- Opposite charges attract each other
- Energy is required to separate opposite charges across a membrane
- Energy is liberated when the charges move toward one another
- If opposite charges are separated, the system has potential energy
Question:
9. What happens between opposite charges?
Answer:
They attract each other
Question:
10. What is required to keep opposite charges separated
across a membrane?
Answer:
Energy
Question:
11. What happens when opposite charges move toward
each other?
Answer:
Energy is released (liberated)
Question:
12. What kind of energy exists when opposite charges are
separated?
Answer:
Potential energy
Question:
13. Why is separating charges important in neurons?
Answer:
It creates potential energy that can be used to generate electrical signals (like
action potentials)
Question:
14. What happens to potential energy when charges
equalized
Answer:
It is converted into kinetic/electrical energy
UPDATED ACTUAL QUESTIONS AND CORRECT
ANSWERS
Question:
1. What does it mean that neurons are excitable?
Answer:
They respond to stimuli by generating electrical changes (depolarization)
Question:
2. Depolarization
Answer:
A short positive change in the membrane potential
Question:
3. Action potential
Answer:
"Nerve Impulse"; the change in electrical potential associated with the passage of
an impulse along the membrane of a muscle cell or nerve cell.
Question:
4. Where are the action potentials generated in a neuron?
Answer:
At the axon hillock (cell body region)
Question:
5. In which direction do action potentials travel?
Answer:
Down the axon
Question:
6. What is the basis of the action potential conduction?
Answer:
Electrical potentials across the axon (or muscle) membrane
Question:
7. What triggers a neuron to depolarize?
Answer:
A stimulus
, Question:
8. Basic Principles of Electricity
Answer:
- Opposite charges attract each other
- Energy is required to separate opposite charges across a membrane
- Energy is liberated when the charges move toward one another
- If opposite charges are separated, the system has potential energy
Question:
9. What happens between opposite charges?
Answer:
They attract each other
Question:
10. What is required to keep opposite charges separated
across a membrane?
Answer:
Energy
Question:
11. What happens when opposite charges move toward
each other?
Answer:
Energy is released (liberated)
Question:
12. What kind of energy exists when opposite charges are
separated?
Answer:
Potential energy
Question:
13. Why is separating charges important in neurons?
Answer:
It creates potential energy that can be used to generate electrical signals (like
action potentials)
Question:
14. What happens to potential energy when charges
equalized
Answer:
It is converted into kinetic/electrical energy
