A patient has damage to myelin in the central nervous system. Their neurons can still produce action potentials, but communication between brain regions is slower and less reliable. Explain which glial cell normally produces CNS myelin. Analyze why action potentials are slower when myelin is damaged. Explain how nodes of Ranvier are involved in normal fast conduction. Predict how damaged myelin could affect energy use by the neuron. Evaluate why symptoms may vary depending on which axons are affected.
Author: Anonymous
A student writes: “If a red blood cell is placed in a hypert…
A student writes: “If a red blood cell is placed in a hypertonic solution, water will move into the cell because the solution has more solute. The cell will swell.” Analyze the student’s statement. Identify what is correct, what is incorrect, and rewrite the explanation correctly.
Explain the role of ATP in action potential formation.
Explain the role of ATP in action potential formation.
A toxin keeps voltage-gated Na⁺ channels in the inactivated/…
A toxin keeps voltage-gated Na⁺ channels in the inactivated/closed state longer than normal. Analyze how this would affect: depolarization the absolute refractory period the ability of the neuron to respond to increased stimulus strength signal transmission down the axon
Describe the steps of synaptic transmission from the action…
Describe the steps of synaptic transmission from the action potential reaching the axon terminus to the termination of the response.
The 1832 Reform Act of England and Wales, which is widely co…
The 1832 Reform Act of England and Wales, which is widely considered to mark the end of the Romantic Period and beginning of the Victorian Age, was extremely important because it
Ben was arrested for reckless driving which resulted in the…
Ben was arrested for reckless driving which resulted in the death of Cecil. After giving Ben his Miranda rights, Officer Able speculated about his theory of what happened. Ben expressed a desire to talk to a lawyer. The officers immediately terminated the conversation. A few minutes later, in route to the jail, Ben asked the officer: “Well, what is going to happen to me now?” In response, the officer said that Ben didn’t have to talk to him unless he decided to do so of his own free will. Ben said that he understood. Ben was given another set of Miranda warnings. Ben then confessed that he had been driving the vehicle in which Cecil was killed and that he had consumed a considerable amount of alcohol before passing out at the wheel. Ben’s attorney argues that the confession by his client is inadmissible. The court considers the four options below: Suppress confession because the officer should never have engaged in conversation with Ben after he expressed his desire to “talk to a lawyer.” Admit the confession because it was the product of a knowingly and intelligently waiver. Suppress the confession because it was the product of a custodial interrogation. Admit the confession because the officer did not initiate the conversation with Ben. Choose the best answer from the options below:
After obtaining a subpoena the police placed a device on Abl…
After obtaining a subpoena the police placed a device on Able’s electric box which monitored the electricity output of his house based upon the suspicion that Able was operating an illegal marijuana production facility. Operating 7 days a week, 24 hours per day, over a 6 month period, the device revealed that Able’s electricity usage was twenty times that of other homes in the area. Assume that marijuana production is illegal in this jurisdiction. If this evidence is introduced against Able in a prosecution for the production of a controlled substance, a court is most likely to rule: The evidence is excludable because this is an illegal search. The evidence is excludable because a warrant should have first been obtained. The evidence is admissible because electricity output is non-content information. The evidence is admissible because a subpoena is the proper means of monitoring the electricity output. Choose the best answer from the options below:
On appeal of his conviction for murder Ben raises the claim…
On appeal of his conviction for murder Ben raises the claim that his trial counsel failed to call specific character witnesses and did not request a psychiatric exam. In raising his ineffective assistance of counsel claim Ben must show that: His counsel’s assistance was deficient. His counsel prejudiced his defense. The counsel’s performance did not conform to a community standard of proficiency. The performance of his counsel at trial was not harmless error. Choose the best answer from the options below:
A [x] g sample of metal absorbs [y] J of heat. If the temper…
A [x] g sample of metal absorbs [y] J of heat. If the temperature of the metal increases from 22.0°C to 47.2°C, what is the specific heat of the metal?