Question 1

Allowing only certain people to cross the street, and only at certain times, is comparable to a neuron's ____ with respect to ions.

Accepted Answer

A)  threshold of excitation 
B)  all-or-none law 
C)  resting potential 
D)  selective permeability 
A)  threshold of excitation 
B)  all-or-none law 
C)  resting potential 
D)  selective permeability

Question 2

What does myelin cover?

Accepted Answer

A)  all axons 
B)  most dendrites 
C)  some axons in vertebrates and none in invertebrates 
D)  all vertebrate axons and some invertebrate axons 
A)  all axons 
B)  most dendrites 
C)  some axons in vertebrates and none in invertebrates 
D)  all vertebrate axons and some invertebrate axons

Question 3

Under what conditions is it impossible for a stimulus to produce an action potential?

Accepted Answer

A)  if the membrane is in its absolute refractory period 
B)  if it occurs at the same time as a hyperpolarizing stimulus 
C)  if sodium ions are more concentrated outside the cell than inside 
D)  if the potassium gates have been blocked 
A)  if the membrane is in its absolute refractory period 
B)  if it occurs at the same time as a hyperpolarizing stimulus 
C)  if sodium ions are more concentrated outside the cell than inside 
D)  if the potassium gates have been blocked

Question 4

The electrical gradient of a neuron membrane refers to what?

Accepted Answer

A difference in elec

Question 5

Glial cells transmit information across long distances.

Accepted Answer

A) True 
 B)False

Question 6

The branching fibers that form the information-receiving pole of the nerve cells are called:

Accepted Answer

A)  motor neurons. 
B)  dendrites. 
C)  sensory neurons. 
D)  axons. 
A)  motor neurons. 
B)  dendrites. 
C)  sensory neurons. 
D)  axons.

Question 7

Ordinarily, stimulation of a neuron takes place:

Accepted Answer

A)  through hyperpolarization. 
B)  at the synapse. 
C)  in the mitochondria. 
D)  in the endoplasmic reticulum. 
A)  through hyperpolarization. 
B)  at the synapse. 
C)  in the mitochondria. 
D)  in the endoplasmic reticulum.

Question 8

Compared to passive transport, the major disadvantage of active transport is that it:

Accepted Answer

A)  cannot transport chemicals out of the brain. 
B)  requires expenditure of energy. 
C)  transports glucose into the brain. 
D)  transports viruses into the brain. 
A)  cannot transport chemicals out of the brain. 
B)  requires expenditure of energy. 
C)  transports glucose into the brain. 
D)  transports viruses into the brain.

Allowing only certain people to cross the street, and only at certain times, is comparable to a neuron's ____ with respect to ions.

What does myelin cover?

Under what conditions is it impossible for a stimulus to produce an action potential?

The electrical gradient of a neuron membrane refers to what?

Glial cells transmit information across long distances.

The branching fibers that form the information-receiving pole of the nerve cells are called:

Ordinarily, stimulation of a neuron takes place:

Compared to passive transport, the major disadvantage of active transport is that it:

The Major Issues

Synapses

Anatomy of the Nervous System

Development and Plasticity of the Brain

Vision

The Other Sensory Systems

Movement

Wakefulness and Sleep

Internal Regulation

Reproductive Behaviors

Emotional Behaviors

The Biology of Learning and Memory

Cognitive Functions

Mood Disorders and Schizophrenia

Filters

Exam 2: Nerve Cells and Nerve Impulses

Allowing only certain people to cross the street, and only at certain times, is comparable to a neuron's ____ with respect to ions.

What does myelin cover?

Under what conditions is it impossible for a stimulus to produce an action potential?

The electrical gradient of a neuron membrane refers to what?

Glial cells transmit information across long distances.

The branching fibers that form the information-receiving pole of the nerve cells are called:

Ordinarily, stimulation of a neuron takes place:

Compared to passive transport, the major disadvantage of active transport is that it:

The Major Issues

Synapses

Anatomy of the Nervous System

Development and Plasticity of the Brain

Vision

The Other Sensory Systems

Movement

Wakefulness and Sleep

Internal Regulation

Reproductive Behaviors

Emotional Behaviors

The Biology of Learning and Memory

Cognitive Functions

Mood Disorders and Schizophrenia

Filters