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Questions and Answers
What characterizes the resting potential of a neuron?
What characterizes the resting potential of a neuron?
- Ions are evenly distributed between the intracellular and extracellular spaces.
- The intracellular space is negatively charged and the extracellular space is positively charged. (correct)
- The intracellular space is positively charged and the extracellular space is negatively charged.
- Both intracellular and extracellular spaces are negatively charged.
What role do ions play in the transmission of a nerve impulse?
What role do ions play in the transmission of a nerve impulse?
- Ions enable the generation of electrical signals through their movement. (correct)
- Ions disrupt the flow of the nerve impulse.
- Ions are not involved in the nerve impulse transmission.
- Ions create a permanent electrical charge in the neuron.
Which description best fits the nature of a nerve impulse?
Which description best fits the nature of a nerve impulse?
- A nerve impulse is a weak electric current that resembles a wave. (correct)
- A nerve impulse is a chemical reaction that spreads across neurons.
- A nerve impulse is an unchangeable electrical charge throughout the neuron.
- A nerve impulse indicates a complete loss of electrical potential in the neuron.
In which part of the neuron does the resting potential primarily occur?
In which part of the neuron does the resting potential primarily occur?
What does the presence of ions in the diagrams indicate about the state of the neuron?
What does the presence of ions in the diagrams indicate about the state of the neuron?
Flashcards
Resting Potential
Resting Potential
The difference in electrical charge between the inside and outside of a neuron when it is not transmitting an impulse.
Nerve Impulse
Nerve Impulse
A wave of electrical activity that travels along a neuron, caused by the movement of ions.
Why is there a resting potential?
Why is there a resting potential?
The inside of the neuron is negatively charged, while the outside is positively charged.
How does a nerve impulse travel?
How does a nerve impulse travel?
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What does a neuron look like?
What does a neuron look like?
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Study Notes
Nerve Impulse Transmission
- A nerve impulse is an electrical signal traveling along a neuron.
- The impulse originates from ion movement, causing changes in electrical charge.
- At rest, the neuron's intracellular space is negatively charged, and the extracellular space is positively charged. This is called the resting potential.
- Nerve impulses are weak electric currents, similar to waves.
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Description
This quiz explores the fundamentals of nerve impulse transmission, including the mechanisms behind electrical signals in neurons. You'll learn about resting potential and how ion movement contributes to signal propagation. Test your understanding of these key concepts in neurobiology.
