Question 1

Which statement is NOT true about the action potential of the neuron?

Accepted Answer

A)  Repolarization occurs as movement of potassium ions occurs across the cell membrane 
B)  The action potential moves more slowly along a myelinated neuron than along one with no myelin sheath 
C)  The action potential travels the length of the axon in a self-propagating fashion 
D)  Saltatory conduction occurs from one node of Ranvier to another along a myelinated neuron 
E)  Large fibers in neurons of some invertebrates carry very rapid nerve action potentials 
A)  Repolarization occurs as movement of potassium ions occurs across the cell membrane 
B)  The action potential moves more slowly along a myelinated neuron than along one with no myelin sheath 
C)  The action potential travels the length of the axon in a self-propagating fashion 
D)  Saltatory conduction occurs from one node of Ranvier to another along a myelinated neuron 
E)  Large fibers in neurons of some invertebrates carry very rapid nerve action potentials

Question 2

You spray an insect with an organophosphate insecticide.How does it kill the insect?

Accepted Answer

A)  It prevents diffusion of acetylcholine at the synapse 
B)  It destroys the ability of acetylcholinesterase to recycle acetylcholine and allows erratic stimulation and disruption of life activities 
C)  It kills the insect's neurons and ends its ability to control essential life activities 
D)  It stops respiration in nerve cells similar to the effect of cyanide 
E)  None of the choices are correct 
A)  It prevents diffusion of acetylcholine at the synapse 
B)  It destroys the ability of acetylcholinesterase to recycle acetylcholine and allows erratic stimulation and disruption of life activities 
C)  It kills the insect's neurons and ends its ability to control essential life activities 
D)  It stops respiration in nerve cells similar to the effect of cyanide 
E)  None of the choices are correct

Question 3

The vertebrate ear functions in hearing and in ____________.

Accepted Answer

The answer of The vertebrate ear functions in hearing and...

Question 4

Why is the giant squid or the marine snail Aplysia so important in neurology?

Accepted Answer

A)  They were the first primitive organisms to have neurons 
B)  They are the first primitive organisms to "think." 
C)  They lack sensory or motor neurons so all their neurons are uniform and easy to study 
D)  They have large neurons that allow us to probe neuron physiology and trace nervous pathways in anatomy 
E)  Their neurons are different from neurons of other animals 
A)  They were the first primitive organisms to have neurons 
B)  They are the first primitive organisms to "think." 
C)  They lack sensory or motor neurons so all their neurons are uniform and easy to study 
D)  They have large neurons that allow us to probe neuron physiology and trace nervous pathways in anatomy 
E)  Their neurons are different from neurons of other animals

Question 5

Explain how some insects are better at detecting motion while others can see a fuller field.

Accepted Answer

Some insects, such as flies and bees, ar

Question 6

The correct sequence in a reflex arc is

Accepted Answer

A)  receptor, efferent nerve, nerve center, afferent nerve, effector. 
B)  effector, afferent nerve, nerve center, efferent nerve, receptor. 
C)  receptor, afferent nerve, nerve center, efferent nerve, effector. 
D)  effector, efferent nerve, nerve center, afferent nerve, receptor. 
E)  All of the choices are correct. 
A)  receptor, efferent nerve, nerve center, afferent nerve, effector. 
B)  effector, afferent nerve, nerve center, efferent nerve, receptor. 
C)  receptor, afferent nerve, nerve center, efferent nerve, effector. 
D)  effector, efferent nerve, nerve center, afferent nerve, receptor. 
E)  All of the choices are correct.

Question 7

The organ of Corti is

Accepted Answer

A)  the internal part of the cochlea with hair cells that are stimulated by sound waves. 
B)  the part of the eye that contains rods, cones, and bipolar cells. 
C)  the point of the eye at which color vision is most acute. 
D)  part of the inner ear which recognizes dynamic equilibrium and movement. 
E)  None of the choices are correct. 
A)  the internal part of the cochlea with hair cells that are stimulated by sound waves. 
B)  the part of the eye that contains rods, cones, and bipolar cells. 
C)  the point of the eye at which color vision is most acute. 
D)  part of the inner ear which recognizes dynamic equilibrium and movement. 
E)  None of the choices are correct.

Question 8

The inside of the neuron membrane at rest is

Accepted Answer

A)  negatively charged. 
B)  positively charged. 
C)  neutral or equal to the exterior charge. 
D)  None of the choices are true since neurons never rest. 
E)  None of the choices are correct. 
A)  negatively charged. 
B)  positively charged. 
C)  neutral or equal to the exterior charge. 
D)  None of the choices are true since neurons never rest. 
E)  None of the choices are correct.

Question 9

The efferent nervous system is subdivided into the somatic nervous system and the ________ _________ __________.

Accepted Answer

autonomic

Question 10

Trace the neuromuscular sequence of events that occur from when your finger tip touches a sharp tack to the action of pulling your hand back and feeling the pain.

Accepted Answer

When your finger tip touches a sharp tac

Question 11

What keeps a nerve action potential from flowing "backward" in a neuron?

Accepted Answer

A)  Schwann cells keep action potentials flowing one direction 
B)  Sodium ions can only move toward a synapse 
C)  Chemical synapse receptors form a one-way gate and there is a refractory period after sodium ions are pumped back out 
D)  The axon and dendrite have completely different membrane structures 
E)  All of the choices are correct 
A)  Schwann cells keep action potentials flowing one direction 
B)  Sodium ions can only move toward a synapse 
C)  Chemical synapse receptors form a one-way gate and there is a refractory period after sodium ions are pumped back out 
D)  The axon and dendrite have completely different membrane structures 
E)  All of the choices are correct

Question 12

Identify the following and their functions: afferent neurons,efferent neurons,interneurons,receptors,effectors,neuroglial cells,myelin,microglial cells.

Accepted Answer

Afferent neurons, also known as sensory

Question 13

The most posterior region of the brain,really an extension of the spinal cord,is the _______ ________.

Accepted Answer

The answer of The most posterior region of the brain,really...

Question 14

Receptors located in muscles,tendons,and joints that provide the organism with a sense of body position are called ____________.

Accepted Answer

The answer of Receptors located in muscles,tendons,and joints that provide...

Question 15

If we crossed over the nerves leading from the eye and from the ear before they reached the appropriate section of the brain,what would happen?

Accepted Answer

A)  Nerves send vision at the speed of light, hearing at the speed of sound, etc. 
B)  The main difference is in the origin and destination of the nerves involved so the experiment above would "see" flashes of loud noises and "hear" bright light. 
C)  The code sent along the nerves from vision is a different dot-and-dash sequence from the action potentials from hearing. 
D)  They are completely different types of nerve cells and send different action potentials. 
E)  None of the choices are correct. 
A)  Nerves send vision at the speed of light, hearing at the speed of sound, etc. 
B)  The main difference is in the origin and destination of the nerves involved so the experiment above would "see" flashes of loud noises and "hear" bright light. 
C)  The code sent along the nerves from vision is a different dot-and-dash sequence from the action potentials from hearing. 
D)  They are completely different types of nerve cells and send different action potentials. 
E)  None of the choices are correct.

Question 16

A neuron in a cat's leg was stimulated electrically.The only reaction was a contraction of some muscle in the same leg.The neuron was most likely

Accepted Answer

A)  afferent or sensory only. 
B)  efferent or motor only. 
C)  both motor and sensory. 
D)  an interneuron. 
E)  None of the choices are correct 
A)  afferent or sensory only. 
B)  efferent or motor only. 
C)  both motor and sensory. 
D)  an interneuron. 
E)  None of the choices are correct

Question 17

The sense of smell is

Accepted Answer

A)  coded by genes with each of 500-1000 genes coding for a separate odor receptor. 
B)  poor in humans when compared to other mammals such as dogs. 
C)  detected with olfactory endings in a special epithelium covered by a thin film of mucus deep in the nasal cavity. 
D)  analyzed by olfactory cortex that is connected to centers of emotions. 
E)  All of the choices are correct. 
A)  coded by genes with each of 500-1000 genes coding for a separate odor receptor. 
B)  poor in humans when compared to other mammals such as dogs. 
C)  detected with olfactory endings in a special epithelium covered by a thin film of mucus deep in the nasal cavity. 
D)  analyzed by olfactory cortex that is connected to centers of emotions. 
E)  All of the choices are correct.

Question 18

The subdivision of the nervous system that consists of the brain and spinal cord is called the ______ ______ ______.

Accepted Answer

central ne

Question 19

Which of the following is NOT a glial cell?

Accepted Answer

A)  Microglial cells 
B)  Oligodendrocytes 
C)  Astrocytes 
D)  Neuromasts 
E)  Schwann cells 
A)  Microglial cells 
B)  Oligodendrocytes 
C)  Astrocytes 
D)  Neuromasts 
E)  Schwann cells

Question 20

A nerve action potential

Accepted Answer

A)  involves a depolarization of the neuron membrane. 
B)  involves movement of sodium ions from the outside to the inside of the membrane. 
C)  is self-propagating. 
D)  All of the choices are correct. 
E)  None of the choices are correct. 
A)  involves a depolarization of the neuron membrane. 
B)  involves movement of sodium ions from the outside to the inside of the membrane. 
C)  is self-propagating. 
D)  All of the choices are correct. 
E)  None of the choices are correct.

Exam 33: Nervous Coordination: Nervous System and Sense Organs

Which statement is NOT true about the action potential of the neuron?

You spray an insect with an organophosphate insecticide.How does it kill the insect?

The vertebrate ear functions in hearing and in ____________.

Why is the giant squid or the marine snail Aplysia so important in neurology?

Explain how some insects are better at detecting motion while others can see a fuller field.

The correct sequence in a reflex arc is

The organ of Corti is

The inside of the neuron membrane at rest is

The efferent nervous system is subdivided into the somatic nervous system and the ________ _________ __________.

Trace the neuromuscular sequence of events that occur from when your finger tip touches a sharp tack to the action of pulling your hand back and feeling the pain.

What keeps a nerve action potential from flowing "backward" in a neuron?

Identify the following and their functions: afferent neurons,efferent neurons,interneurons,receptors,effectors,neuroglial cells,myelin,microglial cells.

The most posterior region of the brain,really an extension of the spinal cord,is the _______ ________.

Receptors located in muscles,tendons,and joints that provide the organism with a sense of body position are called ____________.

If we crossed over the nerves leading from the eye and from the ear before they reached the appropriate section of the brain,what would happen?

A neuron in a cat's leg was stimulated electrically.The only reaction was a contraction of some muscle in the same leg.The neuron was most likely

The sense of smell is

The subdivision of the nervous system that consists of the brain and spinal cord is called the ______ ______ ______.

Which of the following is NOT a glial cell?

A nerve action potential

Life: Biological Principles and the Science of Zoology

The Origin and Chemistry of Life

Cells As Units of Life

Cellular Metabolism

Genetics: a Review

Organic Evolution

The Reproductive Process

Principles of Development

Architectural Pattern of an Animal

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges and Placozoans

Radiate Animals

Acoelomorpha,Platyzoa,and Mesozoa

Polyzoa and Kryptrochozoa

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Trilobites, Chelicerates, and Myriapods

Crustaceans

Support, Protection, and Movement

Chaetognaths, Echinoderms, and Hemichordates

Chordates

Fishes

Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Support, protection, and Movement

Homeostasis: Osmotic Regulation, Excretion, and Temperature Regulation

Homeostasis: Internal Fluids and Respiration

Digestion and Nutrition

Chemical Coordination: Endocrine System

Immunity

Animal Behavior

Animal Distributions

Animal Ecology

Filters

The efferent nervous system is subdivided into the somatic nervous system and the ____ _ ______.

The most posterior region of the brain,really an extension of the spinal cord,is the _ __.

The subdivision of the nervous system that consists of the brain and spinal cord is called the __.