PSYC 380 Nerve Cells Impulses and
Brain Anatomy Quiz Guide with
Questions and Verified Answers
Score for this attempt: 100 out of 125
Submitted May 27 at 11:39pm
This attempt took 70 minutes.
Question 1
pts
If a drug partly blocked a membrane’s potassium channels, what would be the result?
Action potentials would travel more rapidly.
The cell’s resting potential would be close to zero.
The axon would no longer have a refractory period.
Each action potential would last longer than usual.
After the peak of the action potential, potassium exits the cell, returning the membrane to its resting
potential. If the potassium gates were partly blocked, this process would be slower.
.________________________________________2. Law Exams2.1. Overview of Law EducationLaw education provides students with the knowledge of legal principles, case law, legal
IncorrectQuestion 2
pts
If axon A can produce more action potentials per second than axon B, what can we conclude?
Axon A has a longer absolute refractory period.
Axon A has a shorter absolute refractory period.
Axon A has a higher threshold for excitation.
Axon A has a lower threshold for excitation.
Refractory periods limit the number of action potentials per second.
Question 3
pts
,Who first demonstrated that the brain is composed of individual cells?
Charles Scott Sherrington
Santiago Ramón y Cajal
, Otto Loewi
Camillo Golgi
One of Cajal’s major contributions was an idea that we now take for granted—the idea that the brain
consists of individual cells.
Question 4
pts
How are sodium and potassium distributed across the neuron membrane?
Both are more concentrated inside the cell.
Both are more concentrated outside the cell.
Sodium is more inside, and potassium is more outside.
Sodium is more outside, and potassium is more inside.
Sodium ions are more than 10 times more concentrated outside the membrane than inside, and potassium
ions are more concentrated inside than outside.
.________________________________________2. Law Exams2.1. Overview of Law EducationLaw education provides students with the knowledge of legal principles, case law, legal
Question 5
pts
What are “the three Rs” that apply to animal research?
Receive, replace, reuse
Remember, recover, reform
Rebuke, reverse, refuse
Reduction, replacement, refinement
The legal standard emphasizes “the three Rs”: reduction of animal numbers (using
fewer animals), replacement (using computer models or other substitutes for
animals, when possible), and refinement (modifying the procedures to reduce pain
and discomfort).
Question 6
pts
Brain Anatomy Quiz Guide with
Questions and Verified Answers
Score for this attempt: 100 out of 125
Submitted May 27 at 11:39pm
This attempt took 70 minutes.
Question 1
pts
If a drug partly blocked a membrane’s potassium channels, what would be the result?
Action potentials would travel more rapidly.
The cell’s resting potential would be close to zero.
The axon would no longer have a refractory period.
Each action potential would last longer than usual.
After the peak of the action potential, potassium exits the cell, returning the membrane to its resting
potential. If the potassium gates were partly blocked, this process would be slower.
.________________________________________2. Law Exams2.1. Overview of Law EducationLaw education provides students with the knowledge of legal principles, case law, legal
IncorrectQuestion 2
pts
If axon A can produce more action potentials per second than axon B, what can we conclude?
Axon A has a longer absolute refractory period.
Axon A has a shorter absolute refractory period.
Axon A has a higher threshold for excitation.
Axon A has a lower threshold for excitation.
Refractory periods limit the number of action potentials per second.
Question 3
pts
,Who first demonstrated that the brain is composed of individual cells?
Charles Scott Sherrington
Santiago Ramón y Cajal
, Otto Loewi
Camillo Golgi
One of Cajal’s major contributions was an idea that we now take for granted—the idea that the brain
consists of individual cells.
Question 4
pts
How are sodium and potassium distributed across the neuron membrane?
Both are more concentrated inside the cell.
Both are more concentrated outside the cell.
Sodium is more inside, and potassium is more outside.
Sodium is more outside, and potassium is more inside.
Sodium ions are more than 10 times more concentrated outside the membrane than inside, and potassium
ions are more concentrated inside than outside.
.________________________________________2. Law Exams2.1. Overview of Law EducationLaw education provides students with the knowledge of legal principles, case law, legal
Question 5
pts
What are “the three Rs” that apply to animal research?
Receive, replace, reuse
Remember, recover, reform
Rebuke, reverse, refuse
Reduction, replacement, refinement
The legal standard emphasizes “the three Rs”: reduction of animal numbers (using
fewer animals), replacement (using computer models or other substitutes for
animals, when possible), and refinement (modifying the procedures to reduce pain
and discomfort).
Question 6
pts
