Question 1

When the difference in charge across a neuron's cell membrane decreases the cell is depolarizing.

Accepted Answer

A) True 
 B)False  True

Question 2

Why are the axon terminals of a neuron highly branched?

Accepted Answer

The branching of the axon terminal allows the neuron to communicate with and send signals to a variety of different receiving cells, allowing for a complex and rapid response,

Question 3

Neurotransmitters move from dendrites to cell bodies to axons.

Accepted Answer

A) True 
 B)False  False

Question 4

A signal-sending neuron releases a __________, a molecule that carries the signal across the synapse between nerve cells.

Accepted Answer

The answer of A signal-sending neuron releases a __________, a...

Question 5

The brain has important interactions with the endocrine system. Which part of the brain directly stimulates the release of hormones from the pituitary gland?

Accepted Answer

A)  hypothalamus 
B)  cerebrum 
C)  cerebellum 
D)  central cortex 
A)  hypothalamus 
B)  cerebrum 
C)  cerebellum 
D)  central cortex

Question 6

As you complete this exam, which of part of the brain is helping your decide which answer is correct?

Accepted Answer

A)  cerebellum 
B)  pons 
C)  thalamus 
D)  cerebral cortex 
A)  cerebellum 
B)  pons 
C)  thalamus 
D)  cerebral cortex

Question 7

Examine the figure below.
   
The path of the arrows in this figure indicates the movement of _______________ through a neuron.

Accepted Answer

The answer of Examine the figure below.
   
The...

Question 8

Action potentials and resting potentials are the same thing.

Accepted Answer

A) True 
 B)False

Question 9

The distance between an axon terminal and the receiving cell must be very small because

Accepted Answer

A)  the plasma membranes of the two cells must be almost touching for action potentials to pass from one to the other. 
B)  neurons use the diffusion of neurotransmitters to transmit stimuli between cells and diffusion is only rapid over short distances. 
C)  the short distance creates a large surface area so that the receiving cell can receive a large number of neurotransmitters at once, ensuring rapid signal transmission. 
D)  the short distance allows sodium to be exchanged between the two cells, ensuring that the receiving cell has enough sodium to create an action potential. 
A)  the plasma membranes of the two cells must be almost touching for action potentials to pass from one to the other. 
B)  neurons use the diffusion of neurotransmitters to transmit stimuli between cells and diffusion is only rapid over short distances. 
C)  the short distance creates a large surface area so that the receiving cell can receive a large number of neurotransmitters at once, ensuring rapid signal transmission. 
D)  the short distance allows sodium to be exchanged between the two cells, ensuring that the receiving cell has enough sodium to create an action potential.

Question 10

Axons transmit information in the form of

Accepted Answer

A)  resting potentials. 
B)  sodium channels. 
C)  action potentials. 
D)  myelin sheaths. 
A)  resting potentials. 
B)  sodium channels. 
C)  action potentials. 
D)  myelin sheaths.

Question 11

An action potential travels in only one direction, because

Accepted Answer

A)  the nodes of Ranvier are open only at the site of the action potential. 
B)  only the sodium channels "downstream" are open. 
C)  only the sodium channels at the site of the action potential remain open. 
D)  sodium ions can move only between nodes of Ranvier. 
A)  the nodes of Ranvier are open only at the site of the action potential. 
B)  only the sodium channels "downstream" are open. 
C)  only the sodium channels at the site of the action potential remain open. 
D)  sodium ions can move only between nodes of Ranvier.

Question 12

The blood vessels indicated by the black arrow in the figure below transport hormones from the pituitary gland to the hypothalamus.

Accepted Answer

A) True 
 B)False

Question 13

A myelin sheath

Accepted Answer

A)  stores sodium ions. 
B)  acts as an electrical conductor. 
C)  acts as an insulator. 
D)  contains action potentials. 
A)  stores sodium ions. 
B)  acts as an electrical conductor. 
C)  acts as an insulator. 
D)  contains action potentials.

Question 14

When you smell a flower, what part of the brain processes the odors you sense?

Accepted Answer

A)  parietal 
B)  temporal 
C)  occipital 
D)  frontal 
A)  parietal 
B)  temporal 
C)  occipital 
D)  frontal

Question 15

Which of the following is most likely to be myelinated?

Accepted Answer

A)  an interneuron 
B)  the axon between your spinal cord and your big toe 
C)  an axon that only exists within the spinal cord 
D)  a neuron in the thalamus 
A)  an interneuron 
B)  the axon between your spinal cord and your big toe 
C)  an axon that only exists within the spinal cord 
D)  a neuron in the thalamus

Question 16

Our ability to invent tools and hunting tactics rests within the

Accepted Answer

A)  pons. 
B)  hindbrain. 
C)  pituitary gland. 
D)  neocortex. 
A)  pons. 
B)  hindbrain. 
C)  pituitary gland. 
D)  neocortex.

Question 17

Action potentials move faster in myelinated nerve fibers, because

Accepted Answer

A)  sodium ions can leap from node to node. 
B)  dendrites do not need to connect directly to axons. 
C)  sodium ions can pass through myelin faster than they do across the plasma membrane of a neuron. 
D)  action potentials leap from node to node. 
A)  sodium ions can leap from node to node. 
B)  dendrites do not need to connect directly to axons. 
C)  sodium ions can pass through myelin faster than they do across the plasma membrane of a neuron. 
D)  action potentials leap from node to node.

Question 18

Everyone who abuses drugs from an early age will become an addict.

Accepted Answer

A) True 
 B)False

Question 19

The cerebrum has four major lobes, the parietal lobe, the frontal lobe, the temporal lobe, and the _________ lobe.

Accepted Answer

The answer of The cerebrum has four major lobes, the...

Question 20

Which of the following is not part of the forebrain?

Accepted Answer

A)  cerebrum 
B)  pons 
C)  thalamus 
D)  hypothalamus 
A)  cerebrum 
B)  pons 
C)  thalamus 
D)  hypothalamus

Exam 25: The Nervous System

When the difference in charge across a neuron's cell membrane decreases the cell is depolarizing.

Why are the axon terminals of a neuron highly branched?

Neurotransmitters move from dendrites to cell bodies to axons.

A signal-sending neuron releases a __________, a molecule that carries the signal across the synapse between nerve cells.

The brain has important interactions with the endocrine system. Which part of the brain directly stimulates the release of hormones from the pituitary gland?

As you complete this exam, which of part of the brain is helping your decide which answer is correct?

Examine the figure below. The path of the arrows in this figure indicates the movement of _______________ through a neuron.

Action potentials and resting potentials are the same thing.

The distance between an axon terminal and the receiving cell must be very small because

Axons transmit information in the form of

An action potential travels in only one direction, because

The blood vessels indicated by the black arrow in the figure below transport hormones from the pituitary gland to the hypothalamus.

A myelin sheath

When you smell a flower, what part of the brain processes the odors you sense?

Which of the following is most likely to be myelinated?

Our ability to invent tools and hunting tactics rests within the

Action potentials move faster in myelinated nerve fibers, because

Everyone who abuses drugs from an early age will become an addict.

The cerebrum has four major lobes, the parietal lobe, the frontal lobe, the temporal lobe, and the _________ lobe.

Which of the following is not part of the forebrain?

The Nature of Science and the Characteristics of Life

Organizing the Diversity of Life

Major Groups of Living Organisms

Chemical Building Blocks

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

DNA

From Gene to Protein

Control of Gene Expression

DNA Technology

How Evolution Works

Evolution of Populations

Adaptation and Speciation

The Evolutionary History of Life

Maintaining the Internal Environment

Animal Nutrition and Digestion

Gas Exchange

The Circulatory System

Animal Hormones

Sensing the Environment

Skeletons, Muscles, and Movement

Defenses against Disease

Reproduction and Development

Animal Behavior

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

The Biosphere

Growth of Populations

Interactions among Organisms

Communities of Organisms

Ecosystems

Global Change

Biodiversity and People

Cancer: Cell Division Out of Control

Harnessing the Human Genome

Humans and Evolution

Smoking--Beyond Lung Cancer

Feeding a Hungry Planet

Building a Sustainable Society

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