Question 1

Direct neurotransmitters bind to G protein-coupled receptors.

Accepted Answer

A) True 
 B)False

Question 2

Why is the refractory period of a neuron's plasma membrane important?

Accepted Answer

A) because it initiates an action potential 
B) because it ensures that an impulse will travel in a one-way direction 
C) because it ensures that the threshold potential will be reached 
D) because it establishes the resting potential 
A) because it initiates an action potential 
B) because it ensures that an impulse will travel in a one-way direction 
C) because it ensures that the threshold potential will be reached 
D) because it establishes the resting potential

Question 3

Why does depolarization of the neuron plasma membrane occur?

Accepted Answer

A) due to the diffusion of K+ into the cell 
B) due to the diffusion of K+ out of the cell 
C) due to the diffusion of Na+ out of the cell 
D) due to the diffusion of Na+ into the cell 
A) due to the diffusion of K+ into the cell 
B) due to the diffusion of K+ out of the cell 
C) due to the diffusion of Na+ out of the cell 
D) due to the diffusion of Na+ into the cell

Question 4

Which structures are used by electrical synapses during signal transmission?

Accepted Answer

A) vesicles 
B) neurotransmitters 
C) Ca2+ 
D) gap junctions 
A) vesicles 
B) neurotransmitters 
C) Ca2+ 
D) gap junctions

Question 5

Match each situation to the most appropriate term.
-occurs due to the diffusion of Na+

Accepted Answer

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

Question 6

Which of the following involves Na+?

Accepted Answer

A) resting membrane potential 
B) repolarization 
C) hyperpolarization 
D) depolarization 
A) resting membrane potential 
B) repolarization 
C) hyperpolarization 
D) depolarization

Question 7

In terms of changes in membrane potential, compare and contrast action potentials and graded potentials.

Accepted Answer

Action potentials are all-or-none phenom

Question 8

In humans, which neurons are composed of the greatest number of cells?

Accepted Answer

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

Question 9

Which of the following conduct(s) electrical signals away from the cell body of a neuron?

Accepted Answer

A) the dendrites 
B) an axon terminal 
C) an axon 
D) the nucleus 
A) the dendrites 
B) an axon terminal 
C) an axon 
D) the nucleus

Question 10

Match each situation to the most appropriate term.
-causes a neuron membrane potential to become more negative, allowing it to approach its resting potential

Accepted Answer

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

Question 11

What nervous system cells send and receive electrical signals?

Accepted Answer

A) glial cells 
B) receptors 
C) sensors 
D) neurons 
A) glial cells 
B) receptors 
C) sensors 
D) neurons

Question 12

The nervous systems of arthropods are composed of nerve nets.

Accepted Answer

A) True 
 B)False

Question 13

The additive effect of one neuron sending many EPSPs to another neuron over a brief period of time is called spatial summation.

Accepted Answer

A) True 
 B)False

Question 14

Cephalization is associated with bilateral symmetry.

Accepted Answer

A) True 
 B)False

Question 15

Which term refers to the component of a neural signalling pathway in which messages are sorted and interpreted?

Accepted Answer

A) integration 
B) reception 
C) response 
D) action 
A) integration 
B) reception 
C) response 
D) action

Question 16

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 17

How is sensory information transmitted to the CNS?

Accepted Answer

A) by the efferent neurons of the autonomic nervous system 
B) by the somatic neurons of the peripheral nervous system 
C) by the somatic neurons of the sympathetic division 
D) by the afferent neurons of the peripheral nervous system 
A) by the efferent neurons of the autonomic nervous system 
B) by the somatic neurons of the peripheral nervous system 
C) by the somatic neurons of the sympathetic division 
D) by the afferent neurons of the peripheral nervous system

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 pair of ions is involved in changing membrane potential?

Accepted Answer

A) magnesium and potassium 
B) sodium and magnesium 
C) sodium and potassium 
D) magnesium and chloride 
A) magnesium and potassium 
B) sodium and magnesium 
C) sodium and potassium 
D) magnesium and chloride

Question 20

What happens as the action potential reaches its peak?

Accepted Answer

A) The inactivation gates of Na+ channels close. 
B) The activation gates of Na+ channels close. 
C) The inactivation gates of Na+ channels open. 
D) Na+/K+ active transport pumps are activated. 
A) The inactivation gates of Na+ channels close. 
B) The activation gates of Na+ channels close. 
C) The inactivation gates of Na+ channels open. 
D) Na+/K+ active transport pumps are activated.

Exam 44: Control of Animal Processes: Neural Control

Direct neurotransmitters bind to G protein-coupled receptors.

Why is the refractory period of a neuron's plasma membrane important?

Why does depolarization of the neuron plasma membrane occur?

Which structures are used by electrical synapses during signal transmission?

Match each situation to the most appropriate term. -occurs due to the diffusion of Na+

Which of the following involves Na+?

In terms of changes in membrane potential, compare and contrast action potentials and graded potentials.

In humans, which neurons are composed of the greatest number of cells?

Which of the following conduct(s) electrical signals away from the cell body of a neuron?

Match each situation to the most appropriate term. -causes a neuron membrane potential to become more negative, allowing it to approach its resting potential

What nervous system cells send and receive electrical signals?

The nervous systems of arthropods are composed of nerve nets.

The additive effect of one neuron sending many EPSPs to another neuron over a brief period of time is called spatial summation.

Cephalization is associated with bilateral symmetry.

Which term refers to the component of a neural signalling pathway in which messages are sorted and interpreted?

Match each term with its definition. -brain stem

How is sensory information transmitted to the CNS?

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

Which pair of ions is involved in changing membrane potential?

What happens as the action potential reaches its peak?

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. -occurs due to the diffusion of Na⁺

Which of the following involves Na⁺?