Question 1

Match each term with its description.
-threshold potential

Accepted Answer

A) electrical potential difference across a plasma membrane 
B) subthreshold change in membrane potential toward the threshold potential of a neuron 
C) membrane potential of an excitable membrane when it is not being stimulated 
D) subthreshold change in membrane potential away from the threshold potential of a neuron 
E) abrupt, transient change in membrane potential, consisting of membrane depolarization followed by repolarization
F)minimum membrane potential required to form an action potential
G)any subthreshold change in membrane potential whose effects are additive 
A) electrical potential difference across a plasma membrane 
B) subthreshold change in membrane potential toward the threshold potential of a neuron 
C) membrane potential of an excitable membrane when it is not being stimulated 
D) subthreshold change in membrane potential away from the threshold potential of a neuron 
E) abrupt, transient change in membrane potential, consisting of membrane depolarization followed by repolarization
F)minimum membrane potential required to form an action potential
G)any subthreshold change in membrane potential whose effects are additive

Question 2

Valium is a drug that causes voltage-gated Cl- channels to open. What effects would this cause in a postsynaptic membrane?

Accepted Answer

Valium would cause hyperpolari

Question 3

Match each term with its definition.
-somatic nervous system

Accepted Answer

A) loose meshwork of neurons organized with radial symmetry 
B) cavities in the vertebrate brain filled with cerebrospinal fluid 
C) efferent portion of the PNS that deals with body movements that are under conscious, voluntary control 
D) neuronal activity that occurs without conscious effort; often associated with protection 
E) carries nervous activity from the brain and spinal cord to effector structures
F)composed of the midbrain, pons, and medulla
G)import with the ability to speak 
A) loose meshwork of neurons organized with radial symmetry 
B) cavities in the vertebrate brain filled with cerebrospinal fluid 
C) efferent portion of the PNS that deals with body movements that are under conscious, voluntary control 
D) neuronal activity that occurs without conscious effort; often associated with protection 
E) carries nervous activity from the brain and spinal cord to effector structures
F)composed of the midbrain, pons, and medulla
G)import with the ability to speak

Question 4

Which of the following is a possible result of EPSP and IPSP activity?

Accepted Answer

A) an unusually strong action potential forms 
B) an unusually strong presynaptic potential forms 
C) temporal summation in a postsynaptic neuron 
D) temporal summation in a presynaptic neuron 
A) an unusually strong action potential forms 
B) an unusually strong presynaptic potential forms 
C) temporal summation in a postsynaptic neuron 
D) temporal summation in a presynaptic neuron

Question 5

Match each term with its definition.
-reflexes

Accepted Answer

A) loose meshwork of neurons organized with radial symmetry 
B) cavities in the vertebrate brain filled with cerebrospinal fluid 
C) efferent portion of the PNS that deals with body movements that are under conscious, voluntary control 
D) neuronal activity that occurs without conscious effort; often associated with protection 
E) carries nervous activity from the brain and spinal cord to effector structures
F)composed of the midbrain, pons, and medulla
G)import with the ability to speak 
A) loose meshwork of neurons organized with radial symmetry 
B) cavities in the vertebrate brain filled with cerebrospinal fluid 
C) efferent portion of the PNS that deals with body movements that are under conscious, voluntary control 
D) neuronal activity that occurs without conscious effort; often associated with protection 
E) carries nervous activity from the brain and spinal cord to effector structures
F)composed of the midbrain, pons, and medulla
G)import with the ability to speak

Question 6

Oligodendrocytes are responsible for myelinating central nervous system axons.

Accepted Answer

A) True 
 B)False

Question 7

Which term refers to the minimum level of depolarization required to initiate an action potential in an excitable cell?

Accepted Answer

A) membrane potential 
B) refractory potential 
C) electrical potential 
D) threshold potential 
A) membrane potential 
B) refractory potential 
C) electrical potential 
D) threshold potential

Question 8

Cephalization is associated with bilateral symmetry.

Accepted Answer

A) True 
 B)False

Question 9

Match each term with its definition.
-Broca's area

Accepted Answer

A) loose meshwork of neurons organized with radial symmetry 
B) cavities in the vertebrate brain filled with cerebrospinal fluid 
C) efferent portion of the PNS that deals with body movements that are under conscious, voluntary control 
D) neuronal activity that occurs without conscious effort; often associated with protection 
E) carries nervous activity from the brain and spinal cord to effector structures
F)composed of the midbrain, pons, and medulla
G)import with the ability to speak 
A) loose meshwork of neurons organized with radial symmetry 
B) cavities in the vertebrate brain filled with cerebrospinal fluid 
C) efferent portion of the PNS that deals with body movements that are under conscious, voluntary control 
D) neuronal activity that occurs without conscious effort; often associated with protection 
E) carries nervous activity from the brain and spinal cord to effector structures
F)composed of the midbrain, pons, and medulla
G)import with the ability to speak

Question 10

Match each term with its description.
-action potential

Accepted Answer

A) electrical potential difference across a plasma membrane 
B) subthreshold change in membrane potential toward the threshold potential of a neuron 
C) membrane potential of an excitable membrane when it is not being stimulated 
D) subthreshold change in membrane potential away from the threshold potential of a neuron 
E) abrupt, transient change in membrane potential, consisting of membrane depolarization followed by repolarization
F)minimum membrane potential required to form an action potential
G)any subthreshold change in membrane potential whose effects are additive 
A) electrical potential difference across a plasma membrane 
B) subthreshold change in membrane potential toward the threshold potential of a neuron 
C) membrane potential of an excitable membrane when it is not being stimulated 
D) subthreshold change in membrane potential away from the threshold potential of a neuron 
E) abrupt, transient change in membrane potential, consisting of membrane depolarization followed by repolarization
F)minimum membrane potential required to form an action potential
G)any subthreshold change in membrane potential whose effects are additive

Question 11

Match each term with its definition.
-ventricles

Accepted Answer

A) loose meshwork of neurons organized with radial symmetry 
B) cavities in the vertebrate brain filled with cerebrospinal fluid 
C) efferent portion of the PNS that deals with body movements that are under conscious, voluntary control 
D) neuronal activity that occurs without conscious effort; often associated with protection 
E) carries nervous activity from the brain and spinal cord to effector structures
F)composed of the midbrain, pons, and medulla
G)import with the ability to speak 
A) loose meshwork of neurons organized with radial symmetry 
B) cavities in the vertebrate brain filled with cerebrospinal fluid 
C) efferent portion of the PNS that deals with body movements that are under conscious, voluntary control 
D) neuronal activity that occurs without conscious effort; often associated with protection 
E) carries nervous activity from the brain and spinal cord to effector structures
F)composed of the midbrain, pons, and medulla
G)import with the ability to speak

Question 12

Which of the following is a component of neural signalling mechanisms?

Accepted Answer

A) integration 
B) reaction 
C) rejection 
D) action 
A) integration 
B) reaction 
C) rejection 
D) action

Question 13

Match each situation to the most appropriate term.
-begins when Na+ channel inactivation gates close and K+ activation gates open

Accepted Answer

A) depolarization 
B) repolarization 
C) hyperpolarization 
A) depolarization 
B) repolarization 
C) hyperpolarization

Question 14

Which cells are located in the brain and spinal cord of vertebrates?

Accepted Answer

A) afferent neurons 
B) efferent neurons 
C) motor neurons 
D) interneurons 
A) afferent neurons 
B) efferent neurons 
C) motor neurons 
D) interneurons

Question 15

Match each term with its definition.
-brain stem

Accepted Answer

A) loose meshwork of neurons organized with radial symmetry 
B) cavities in the vertebrate brain filled with cerebrospinal fluid 
C) efferent portion of the PNS that deals with body movements that are under conscious, voluntary control 
D) neuronal activity that occurs without conscious effort; often associated with protection 
E) carries nervous activity from the brain and spinal cord to effector structures
F)composed of the midbrain, pons, and medulla
G)import with the ability to speak 
A) loose meshwork of neurons organized with radial symmetry 
B) cavities in the vertebrate brain filled with cerebrospinal fluid 
C) efferent portion of the PNS that deals with body movements that are under conscious, voluntary control 
D) neuronal activity that occurs without conscious effort; often associated with protection 
E) carries nervous activity from the brain and spinal cord to effector structures
F)composed of the midbrain, pons, and medulla
G)import with the ability to speak

Question 16

Match each situation to the most appropriate term.
-occurs when a membrane potential becomes more negative than its resting membrane potential

Accepted Answer

A) depolarization 
B) repolarization 
C) hyperpolarization 
A) depolarization 
B) repolarization 
C) hyperpolarization

Question 17

The parasympathetic division predominates in situations involving stress.

Accepted Answer

A) True 
 B)False

Question 18

What happens to a neuron's membrane when its membrane potential becomes less negative?

Accepted Answer

A) It becomes depolarized. 
B) It becomes hyperpolarized. 
C) It becomes hypopolarized. 
D) It becomes repolarized. 
A) It becomes depolarized. 
B) It becomes hyperpolarized. 
C) It becomes hypopolarized. 
D) It becomes repolarized.

Question 19

Which of the following remove(s) Ca2+ from the inside of an axon terminal of a chemical synapse after an electrical impulse has passed?

Accepted Answer

A) ion channels 
B) simple diffusion through the plasma membrane 
C) active transport pumps 
D) exocytosis 
A) ion channels 
B) simple diffusion through the plasma membrane 
C) active transport pumps 
D) exocytosis

Question 20

Match each situation to the most appropriate term.
-an EPSP

Accepted Answer

A) depolarization 
B) repolarization 
C) hyperpolarization 
A) depolarization 
B) repolarization 
C) hyperpolarization

Exam 43: Control of Animal Processes: Neural Control

Match each term with its description. -threshold potential

Valium is a drug that causes voltage-gated Cl- channels to open. What effects would this cause in a postsynaptic membrane?

Match each term with its definition. -somatic nervous system

Which of the following is a possible result of EPSP and IPSP activity?

Match each term with its definition. -reflexes

Oligodendrocytes are responsible for myelinating central nervous system axons.

Which term refers to the minimum level of depolarization required to initiate an action potential in an excitable cell?

Cephalization is associated with bilateral symmetry.

Match each term with its definition. -Broca's area

Match each term with its description. -action potential

Match each term with its definition. -ventricles

Which of the following is a component of neural signalling mechanisms?

Match each situation to the most appropriate term. -begins when Na+ channel inactivation gates close and K+ activation gates open

Which cells are located in the brain and spinal cord of vertebrates?

Match each term with its definition. -brain stem

Match each situation to the most appropriate term. -occurs when a membrane potential becomes more negative than its resting membrane potential

The parasympathetic division predominates in situations involving stress.

What happens to a neuron's membrane when its membrane potential becomes less negative?

Which of the following remove(s) Ca2+ from the inside of an axon terminal of a chemical synapse after an electrical impulse has passed?

Match each situation to the most appropriate term. -an EPSP

Light and Life

The Cell: an Overview

Defining Life and Its Origins

Energy and Enzymes

Cell Membranes and Signalling

Cellular Respiration

Photosynthesis

Cell Cycles

Genetic Recombination

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

Dna Structure, Replication, and Organization

Gene Structure and Expression

Control of Gene Expression

Dna Technologies

Genomes and Proteomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Species and Macroevolution

Understanding the History of Life on Earth

Humans and Evolution

Bacteria and Archaea

Viruses, Viroids, and Prions: Infectious Biological Particles

Protists

Fungi

Plants

Diversity of Animals 1: Sponges, Radiata, Platyhelminthes, and Protostomes

Diversity of Animals 2: Deuterostomes: Vertebrates and Their Closest Relatives

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Conservation of Biodiversity

Putting Selection to Work

Organization of the Plant Body

Transport in Plants

Reproduction and Development in Flowering Plants

Plant Nutrition

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Transport in Animals: the Circulatory System

Reproduction in Animals

Animal Development

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Integration

Muscles, Skeletons, and Body Movements

Animal Behaviour

Animal Nutrition

Gas Exchange: the Respiratory System

Regulating the Internal Environment

Defences Against Disease

Conservation and Evolutionary Physiology

Filters

Match each situation to the most appropriate term. -begins when Na⁺ channel inactivation gates close and K⁺ activation gates open

Which of the following remove(s) Ca²⁺ from the inside of an axon terminal of a chemical synapse after an electrical impulse has passed?