Question 1

There are many more neurons than glia in the nervous system.

Accepted Answer

A) True 
 B)False

Question 2

-Briefly identify the steps of exocytosis that correspond to numbers 1 through 7 in this illustration

Accepted Answer

1. The first step of exocytosis is the p

Question 3

Tetrodotoxin,the poisonous substance produced by the puffer fish,interacts with which of the following?

Accepted Answer

A) sodium channels that are dependent on voltage 
B)  calcium channels located at the axon terminal​ 
C)  hydrogen channels located on postsynaptic dendrites​ 
D)  potassium channels located on the axon membrane​ 
A) sodium channels that are dependent on voltage 
B)  calcium channels located at the axon terminal​ 
C)  hydrogen channels located on postsynaptic dendrites​ 
D)  potassium channels located on the axon membrane​

Question 4

Which of the following disorders is characterized by a progressive demyelination of the nervous system?

Accepted Answer

A) Huntington's disease 
B) Alzheimer's disease 
C) multiple sclerosis 
D) Parkinson's disease 
A) Huntington's disease 
B) Alzheimer's disease 
C) multiple sclerosis 
D) Parkinson's disease

Question 5

Sodium-potassium pumps move

Accepted Answer

A) potassium out of the cell and sodium into the cell. 
B)  sodium out of the cell and potassium into the cell.​ 
C)  both sodium and potassium into the cell.​ 
D)  both sodium and potassium out of the cell.​ 
A) potassium out of the cell and sodium into the cell. 
B)  sodium out of the cell and potassium into the cell.​ 
C)  both sodium and potassium into the cell.​ 
D)  both sodium and potassium out of the cell.​

Question 6

What is an interneuron?

Accepted Answer

An interneuron is a neuron tha

Question 7

Compared with the myelin found on small diameter axons,the myelin coating axons of large diameter axons

Accepted Answer

A) is of equal thickness and spacing. 
B)  has less thickness but equal spacing.​ 
C)  has equal thickness, but the nodes of Ranvier are closer together.​ 
D)  is thicker, and the nodes of Ranvier are farther apart.​ 
A) is of equal thickness and spacing. 
B)  has less thickness but equal spacing.​ 
C)  has equal thickness, but the nodes of Ranvier are closer together.​ 
D)  is thicker, and the nodes of Ranvier are farther apart.​

Question 8

The diameter of an axon is correlated with

Accepted Answer

A) the age of the organism. 
B) the speed of signaling in the axon. 
C) the number of synapses formed by the axon. 
D) whether or not learning has occurred. 
A) the age of the organism. 
B) the speed of signaling in the axon. 
C) the number of synapses formed by the axon. 
D) whether or not learning has occurred.

Question 9

The absolute refractory period occurs because

Accepted Answer

A) the cell is hyperpolarized, requiring a larger than normal stimulus in order to form another action potential. 
B)  it takes time for the sodium-potassium pumps to return ion concentrations to the normal resting state.​ 
C)  only one action potential at a time can travel the length of an axon.​ 
D)  sodium channels cannot reopen until the cell regains its resting potential.​ 
A) the cell is hyperpolarized, requiring a larger than normal stimulus in order to form another action potential. 
B)  it takes time for the sodium-potassium pumps to return ion concentrations to the normal resting state.​ 
C)  only one action potential at a time can travel the length of an axon.​ 
D)  sodium channels cannot reopen until the cell regains its resting potential.​

Question 10

Microtubules are the largest type of fibers found in the neural cytoskeleton.

Accepted Answer

A) True 
 B)False

Question 11

Describe the process of presynaptic inhibition.

Accepted Answer

In presynaptic inhibition,an a

Question 12

The nervous system encodes greater intensity of a given stimulus by

Accepted Answer

A) forming action potentials with higher peaks. 
B)  forming action potentials that last a longer time.​ 
C)  increasing the rate of firing.​ 
D)  reducing the number of neurons that are responding.​ 
A) forming action potentials with higher peaks. 
B)  forming action potentials that last a longer time.​ 
C)  increasing the rate of firing.​ 
D)  reducing the number of neurons that are responding.​

Question 13

Myelinated axons have large numbers of ion channels

Accepted Answer

A) along the entire length. 
B)  only at the axon hillock and nodes of Ranvier.​ 
C)  only at the axon terminals.​ 
D)  only at the axon hillock.​ 
A) along the entire length. 
B)  only at the axon hillock and nodes of Ranvier.​ 
C)  only at the axon terminals.​ 
D)  only at the axon hillock.​

Question 14

In exocytosis,what is one possible advantage of the "kiss and run" mode over the release of all neurotransmitter molecules in a vesicle?

Accepted Answer

A) Signaling across the synapse is much faster. 
B)  Fewer action potentials are needed in order to signal.​ 
C)  Regaining the resting potential in the axon terminal occurs much faster.​ 
D)  Neurons need fewer autoreceptors.​ 
A) Signaling across the synapse is much faster. 
B)  Fewer action potentials are needed in order to signal.​ 
C)  Regaining the resting potential in the axon terminal occurs much faster.​ 
D)  Neurons need fewer autoreceptors.​

Question 15

Multipolar neurons have _______________leaving the cell body.

Accepted Answer

A) one branch 
B)  one axon and many dendrites​ 
C) two processes 
D) one dendrite and many axons 
A) one branch 
B)  one axon and many dendrites​ 
C) two processes 
D) one dendrite and many axons

Question 16

Anterograde and retrograde transport within neurons occurs along

Accepted Answer

A) microtubules. 
B)  neurofilaments.​ 
C) microfilaments. 
D) transport sites. 
A) microtubules. 
B)  neurofilaments.​ 
C) microfilaments. 
D) transport sites.

Question 17

The membrane potential at which an action potential is triggered is known as the

Accepted Answer

A) resting potential. 
B)  threshold.​ 
C) absolute refractory period. 
D) relative refractory period. 
A) resting potential. 
B)  threshold.​ 
C) absolute refractory period. 
D) relative refractory period.

There are many more neurons than glia in the nervous system.

-Briefly identify the steps of exocytosis that correspond to numbers 1 through 7 in this illustration

Tetrodotoxin,the poisonous substance produced by the puffer fish,interacts with which of the following?

Which of the following disorders is characterized by a progressive demyelination of the nervous system?

Sodium-potassium pumps move

What is an interneuron?

Compared with the myelin found on small diameter axons,the myelin coating axons of large diameter axons

The diameter of an axon is correlated with

The absolute refractory period occurs because

Microtubules are the largest type of fibers found in the neural cytoskeleton.

Describe the process of presynaptic inhibition.

The nervous system encodes greater intensity of a given stimulus by

Myelinated axons have large numbers of ion channels

In exocytosis,what is one possible advantage of the "kiss and run" mode over the release of all neurotransmitter molecules in a vesicle?

Multipolar neurons have _______________leaving the cell body.

Anterograde and retrograde transport within neurons occurs along

The membrane potential at which an action potential is triggered is known as the

What Is Behavioral Neuroscience

Functional Neuroanatomy and the Evolution of the Nervous System

Psychopharmacology

Genetics and the Development of the Human Brain

Vision

Nonvisual Sensation and Perception

Movement

Homeostasis and Motivation

Sexual Behavior

Sleep and Waking

Learning and Memory

Hemispheric Asymmetry, language, and Intelligence

Emotion, reward, aggression, and Stress

Neuropsychology

Psychopathology

Filters

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

There are many more neurons than glia in the nervous system.

-Briefly identify the steps of exocytosis that correspond to numbers 1 through 7 in this illustration

Tetrodotoxin,the poisonous substance produced by the puffer fish,interacts with which of the following?

Which of the following disorders is characterized by a progressive demyelination of the nervous system?

Sodium-potassium pumps move

What is an interneuron?

Compared with the myelin found on small diameter axons,the myelin coating axons of large diameter axons

The diameter of an axon is correlated with

The absolute refractory period occurs because

Microtubules are the largest type of fibers found in the neural cytoskeleton.

Describe the process of presynaptic inhibition.

The nervous system encodes greater intensity of a given stimulus by

Myelinated axons have large numbers of ion channels

In exocytosis,what is one possible advantage of the "kiss and run" mode over the release of all neurotransmitter molecules in a vesicle?

Multipolar neurons have _______________leaving the cell body.

Anterograde and retrograde transport within neurons occurs along

The membrane potential at which an action potential is triggered is known as the

What Is Behavioral Neuroscience

Functional Neuroanatomy and the Evolution of the Nervous System

Psychopharmacology

Genetics and the Development of the Human Brain

Vision

Nonvisual Sensation and Perception

Movement

Homeostasis and Motivation

Sexual Behavior

Sleep and Waking

Learning and Memory

Hemispheric Asymmetry, language, and Intelligence

Emotion, reward, aggression, and Stress

Neuropsychology

Psychopathology

Filters