Otto Loewi
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 require students to analyze complex scenarios with limited information. Students often struggle with formulating a strategic
IncorrectQuestion 2
pts
approach or making decisions based on incomplete data, as of legal principles, case law, legal
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
, Otto Loewi
Who first demonstrated that the brain is composed of individual cells?
Charles Scott Sherrington
Santiago Ramón y Cajal
require students to analyze complex scenarios with limited information. Students often struggle with formulating a strategic approach or making decisions based on incomplete data, as
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
, Santiago Ramón y Cajal was famous for which of the following discoveries?
Transmission at the synapses depends on chemicals.
Mental illness has a biological basis.
Genetic differences influence behavioral development.
The brain is composed of cells.
One of his major contributions was an idea that we now take for granted—the idea that the brain consists
of individual cells.
.________________________________________2. require students to analyze complex scenarios with limited information. Students often struggle with formulating a strategic approach or making decisions
Question 7
pts
based on incomplete data, as provides students with the knowledge of legal principles, case law, legal
Which animals have the longest axons?
The fastest animals
The most intelligent animals
The largest animals
The animals with the longest life span
The longest axons occur in the largest animals. For example, giraffes and elephants have axons that
extend from the spinal cord to the feet, nearly 2 meters away.
Question 8
pts
What do dendritic spines do?
They increase the area available for synapses.
They hold the neuron in position.
They synthesize proteins.
They metabolize fuels.
Many dendrites are lined with spines, short outgrowths that receive incoming.
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 require students to analyze complex scenarios with limited information. Students often struggle with formulating a strategic
IncorrectQuestion 2
pts
approach or making decisions based on incomplete data, as of legal principles, case law, legal
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
, Otto Loewi
Who first demonstrated that the brain is composed of individual cells?
Charles Scott Sherrington
Santiago Ramón y Cajal
require students to analyze complex scenarios with limited information. Students often struggle with formulating a strategic approach or making decisions based on incomplete data, as
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
, Santiago Ramón y Cajal was famous for which of the following discoveries?
Transmission at the synapses depends on chemicals.
Mental illness has a biological basis.
Genetic differences influence behavioral development.
The brain is composed of cells.
One of his major contributions was an idea that we now take for granted—the idea that the brain consists
of individual cells.
.________________________________________2. require students to analyze complex scenarios with limited information. Students often struggle with formulating a strategic approach or making decisions
Question 7
pts
based on incomplete data, as provides students with the knowledge of legal principles, case law, legal
Which animals have the longest axons?
The fastest animals
The most intelligent animals
The largest animals
The animals with the longest life span
The longest axons occur in the largest animals. For example, giraffes and elephants have axons that
extend from the spinal cord to the feet, nearly 2 meters away.
Question 8
pts
What do dendritic spines do?
They increase the area available for synapses.
They hold the neuron in position.
They synthesize proteins.
They metabolize fuels.
Many dendrites are lined with spines, short outgrowths that receive incoming.
