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Questions and Answers
What is the primary cause of the neurological disorder Guillain-Barré Syndrome?
What is the primary cause of the neurological disorder Guillain-Barré Syndrome?
- A bacterial infection that releases toxins damaging Schwann cells and myelin sheaths
- An autoimmune response targeting myelin sheaths in the peripheral nervous system (correct)
- A viral infection that triggers an inflammatory response in the brain and spinal cord
- A genetic mutation affecting the production of myelin proteins in the central nervous system
What is the primary function of the resting potential across a neuron's plasma membrane?
What is the primary function of the resting potential across a neuron's plasma membrane?
- To establish a concentration gradient for the active transport of nutrients into the neuron
- To facilitate the diffusion of ions across the membrane for neurotransmitter release
- To maintain a state of readiness for the generation and propagation of action potentials (correct)
- To prevent the formation of synaptic connections between neurons and their targets
Which of the following statements accurately describes the distribution of ions across the plasma membrane at resting potential?
Which of the following statements accurately describes the distribution of ions across the plasma membrane at resting potential?
- The extracellular space has a higher concentration of potassium ions than the intracellular space
- The concentrations of sodium and potassium ions are equal on both sides of the plasma membrane
- The extracellular space has a higher concentration of sodium ions and a lower concentration of potassium ions compared to the intracellular space (correct)
- The intracellular space has a higher concentration of sodium ions than the extracellular space
What is the primary mechanism by which environmental stimuli are converted into neural signals in the nervous system?
What is the primary mechanism by which environmental stimuli are converted into neural signals in the nervous system?
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Which of the following is NOT one of the five main membrane potential processes involved in neural activity?
Which of the following is NOT one of the five main membrane potential processes involved in neural activity?
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What is the primary mechanism by which the bacteria that causes diphtheria leads to neurological complications?
What is the primary mechanism by which the bacteria that causes diphtheria leads to neurological complications?
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