Question 1

Which type of glia actually helps guide the regrowth of axons following injury?

Accepted Answer

A)  astrocytes 
B)   oligodendrocytes​ 
C)  Schwann cells 
D)  microglia

Question 2

The resting potential of a neuron is primarily dependent on the movement of

Accepted Answer

A)  sodium. 
B)   calcium.​ 
C)  chloride. 
D)  potassium.

Question 3

In a healthy brain,adjacent microtubules are connected by

Accepted Answer

A)  microfilaments. 
B)  neurofilaments. 
C)  tau proteins. 
D)  phospholipids.

Question 4

One very active synapse might lead to an action potential in a postsynaptic cell due to

Accepted Answer

A)  saltatory conduction. 
B)   the absolute refractory period.​ 
C)  spatial summation. 
D)  temporal summation.

Question 5

Neurons with short axons that communicate primarily with adjacent cells are known as _________ neurons.​

Accepted Answer

A)   sensory 
B)   motor​ 
C)  projection 
D)  local circuit

Question 6

Additional action potentials can occur in response to stronger-than-normal stimulation during a neuron's absolute refractory period.

Accepted Answer

A) True 
 B)False

Question 7

Proteins produced in the cell body are packaged by the

Accepted Answer

A)  endoplasmic reticulum. 
B)   nucleolus.​ 
C)  mitochondria. 
D)  Golgi apparatus.

Question 8

Presynaptic facilitation occurs at a synapse between a presynaptic axon and a postsynaptic dendrite,and leads to more frequent signaling by the postsynaptic cell.

Accepted Answer

A) True 
 B)False

Question 9

In vertebrates,unipolar cells are common in the

Accepted Answer

A)  cerebral cortex. 
B)   cerebellum.​ 
C)  sensory systems. 
D)  motor systems.

Question 10

In the resting neuron,sodium is pushed

Accepted Answer

A)  out of the cell by diffusion and into the cell by electrical force. 
B)   out of the cell by electrical force and into the cell by diffusion.​ 
C)   out of the cell by both electrical force and diffusion.​ 
D)   into the cell by both electrical force and diffusion.​

Question 11

Extracellular fluid is rich in​

Accepted Answer

A)  K+, with small amounts of Na+ and Cl-. 
B)   K+ and Cl-, with very small amounts of Na+.​ 
C)   Cl-, with very small amounts of K+ and Na+.​ 
D)   Na+ and Cl-, with small amounts of K+.​

Question 12

In order to understand the way the brain and nervous system function,it is important to remember that

Accepted Answer

A)  the nervous system communicates primarily via electrical messages. 
B)   the nervous system communicates primarily via chemical messages.​ 
C)   communication in the nervous system depends on how large the action potentials are.​ 
D)   communication in the nervous system is dependent on both electrical and chemical messages.​

Question 13

Abnormalities involving which type of cytoskeleton fibers have been implicated in Alzheimer's disease?

Accepted Answer

A)  microfilaments 
B)  neurofilaments 
C)  microtubules 
D)  sodium-potassium pumps

Question 14

The tendency for molecules to distribute themselves equally within a medium is known as

Accepted Answer

A)  osmosis. 
B)   diffusion.​ 
C)  electrical force. 
D)  equilibrium.

Question 15

Protein structures on the postsynaptic neuron that have recognition sites on the extracellular side and G proteins on the intracellular side are known as

Accepted Answer

A)  ionotropic receptors. 
B)   metabotropic receptors.​ 
C)  autoreceptors. 
D)  transporter molecules.

Question 16

Which of the types of cytoskeleton fiber run the length of axons,providing structural support for the cell?

Accepted Answer

A)  microfilaments 
B)  neurofilaments 
C)  tau proteins 
D)  microtubules

Question 17

The tendency for molecules with like signs to move apart and molecules with opposite signs to move together is known as

Accepted Answer

A)  osmosis. 
B)   diffusion.​ 
C)  electrical force. 
D)  equilibrium.

Question 18

Ion selectivity is a feature of

Accepted Answer

A)  both ion channels and ion pumps. 
B)  neither ion channels nor ion pumps. 
C)  ion channels, but not ion pumps. 
D)  ion pumps, but not ion channels.

Question 19

What are three major similarities and differences between oligodendrocytes and Schwann cells?

Accepted Answer

Both oligodendrocytes and Schwann cells ...

Question 20

When we find large numbers of mitochondria in a location,what can we infer about the processes that are occurring there?

Accepted Answer

Because mitochondria produce t...

Exam 3: Neurophysiology: the Structure and Functions of the Cells of the Nervous System

The resting potential of a neuron is primarily dependent on the movement of

Correct AnswerverifiedShow Answer

The tendency for molecules to distribute themselves equally within a medium is known as

Correct AnswerverifiedShow Answer

Protein structures on the postsynaptic neuron that have recognition sites on the extracellular side and G proteins on the intracellular side are known as

Correct AnswerverifiedShow Answer

Additional action potentials can occur in response to stronger-than-normal stimulation during a neuron's absolute refractory period.

Correct AnswerverifiedShow Answer

Ion selectivity is a feature of

Correct AnswerverifiedShow Answer

In the resting neuron,sodium is pushed

Correct AnswerverifiedShow Answer

Which type of glia actually helps guide the regrowth of axons following injury?

Correct AnswerverifiedShow Answer

In order to understand the way the brain and nervous system function,it is important to remember that

Correct AnswerverifiedShow Answer

Proteins produced in the cell body are packaged by the

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In vertebrates,unipolar cells are common in the

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Abnormalities involving which type of cytoskeleton fibers have been implicated in Alzheimer's disease?

Correct AnswerverifiedShow Answer

One very active synapse might lead to an action potential in a postsynaptic cell due to

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Extracellular fluid is rich in​

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Neurons with short axons that communicate primarily with adjacent cells are known as _________ neurons.​

Correct AnswerverifiedShow Answer

The tendency for molecules with like signs to move apart and molecules with opposite signs to move together is known as

Correct AnswerverifiedShow Answer

What are three major similarities and differences between oligodendrocytes and Schwann cells?

Correct AnswerverifiedBoth oligodendrocytes and Schwann cells ...View AnswerShow Answer

In a healthy brain,adjacent microtubules are connected by

Correct AnswerverifiedShow Answer

Presynaptic facilitation occurs at a synapse between a presynaptic axon and a postsynaptic dendrite,and leads to more frequent signaling by the postsynaptic cell.

Correct AnswerverifiedShow Answer

Which of the types of cytoskeleton fiber run the length of axons,providing structural support for the cell?

Correct AnswerverifiedShow Answer

When we find large numbers of mitochondria in a location,what can we infer about the processes that are occurring there?

Correct AnswerverifiedBecause mitochondria produce t...View AnswerShow Answer

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Extracellular fluid is rich in

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Neurons with short axons that communicate primarily with adjacent cells are known as _________ neurons.

Correct Answer
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Both oligodendrocytes and Schwann cells ...
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Because mitochondria produce t...
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