Question 1

If you destroyed the neuromasts in a fish's lateral line,how would you expect this to affect its ability to school?

Accepted Answer

The lateral line system in fish is a sen

Question 2

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 3

In a chemical synapse,when the wave of depolarization reaches the presynaptic membrane,it triggers the release of

Accepted Answer

A) sodium ions. 
B) neurotransmitter molecules. 
C) electricity. 
D) nerve action potentials. 
E) None of the choices is correct. 
A) sodium ions. 
B) neurotransmitter molecules. 
C) electricity. 
D) nerve action potentials. 
E) None of the choices is correct.

Question 4

If a nerve to an isolated heart is stimulated and the heartbeat slows,the most reasonable conclusion is that the heart

Accepted Answer

A) is responding to a nerve control that inhibits heartbeat. 
B) is dying since nerves can only stimulate muscle action. 
C) is unaffected by the nerve but responding to some unknown chemical factor. 
D) is normal as all nerve stimulation results in decreased muscle activity. 
E) None of the choices is correct. 
A) is responding to a nerve control that inhibits heartbeat. 
B) is dying since nerves can only stimulate muscle action. 
C) is unaffected by the nerve but responding to some unknown chemical factor. 
D) is normal as all nerve stimulation results in decreased muscle activity. 
E) None of the choices is correct.

Question 5

Internal chemicals communicate from one organ to another target organ or tissue.However,_________ are chemicals released by individuals to influence the behavior of other members of their own species

Accepted Answer

A) interio-hormones 
B) pheromones 
C) excretions 
D) releasing stimuli 
E) biological symbol systems 
A) interio-hormones 
B) pheromones 
C) excretions 
D) releasing stimuli 
E) biological symbol systems

Question 6

Both nerves and hormones serve in biological communication.

Accepted Answer

A) Generally,nerves serve where speed is vital,hormones act slower but have longer-term effects 
B) Both are equally speedy but hormones last longer 
C) Nerve responses are more reliable than chemical and are used for the more important functions 
D) Primitive animals use hormones,advanced ones use nerves 
E) None of the choices is correct 
A) Generally,nerves serve where speed is vital,hormones act slower but have longer-term effects 
B) Both are equally speedy but hormones last longer 
C) Nerve responses are more reliable than chemical and are used for the more important functions 
D) Primitive animals use hormones,advanced ones use nerves 
E) None of the choices is correct

Question 7

The crayfish has a cavity or ___________ lined with sensory seta or hairs.A grain in the cavity is pulled downward by gravity;the pressure against the bottom hairs of the cavity gives the crayfish a perception of being upright and when it changes orientation,the grain touches side hairs that make it realize it is not upright.Thus the crayfish "knows" which way is up in the dark.

Accepted Answer

A) ampulla 
B) labyrinth 
C) saccule 
D) statocyst 
E) statolith 
A) ampulla 
B) labyrinth 
C) saccule 
D) statocyst 
E) statolith

Question 8

The active transport device whereby sodium is moved from inside the axon to the outside is referred to as the ______ ______.

Accepted Answer

The answer of The active transport device whereby sodium is...

Question 9

The nodes of Ranvier are

Accepted Answer

A) motor nerve terminations on muscle fibers. 
B) tiny vesicles on the postsynaptic membrane of synapses. 
C) interruptions in the myelin sheath surrounding axons. 
D) ganglia in the flatworm nervous system. 
E) the interneurons in our cerebral cortex that allow us to "think." 
A) motor nerve terminations on muscle fibers. 
B) tiny vesicles on the postsynaptic membrane of synapses. 
C) interruptions in the myelin sheath surrounding axons. 
D) ganglia in the flatworm nervous system. 
E) the interneurons in our cerebral cortex that allow us to "think."

Question 10

The event at the chemical synapse

Accepted Answer

A) always involves acetylcholine. 
B) always involves some neurotransmitter that stimulates the next neuron. 
C) is a simple continuous "domino" flow of negativity or ions from the axon to the next dendrite. 
D) involves either an inhibitory or stimulating neurotransmitter chemical. 
E) All of the choices are correct. 
A) always involves acetylcholine. 
B) always involves some neurotransmitter that stimulates the next neuron. 
C) is a simple continuous "domino" flow of negativity or ions from the axon to the next dendrite. 
D) involves either an inhibitory or stimulating neurotransmitter chemical. 
E) All of the choices are correct.

Question 11

What is the difference between a reflex arc and a reflex act? List the components and functions of each.

Accepted Answer

A reflex arc and a reflex act are both p

Question 12

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 is 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 is correct.

Question 13

Which statement is NOT true about the cells of the nervous system?

Accepted Answer

A) A dendrite is a cytoplasmic extension of a neuron 
B) There may be multiple dendrites on a single cell 
C) A neuroglial cell supports or protects a neuron 
D) A neuron typically has only one axon 
E) All of the above are correct statements 
A) A dendrite is a cytoplasmic extension of a neuron 
B) There may be multiple dendrites on a single cell 
C) A neuroglial cell supports or protects a neuron 
D) A neuron typically has only one axon 
E) All of the above are correct statements

Question 14

What function does the sodium pump play in neural transmission?

Accepted Answer

The sodium pump, also known as the sodiu

Question 15

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 16

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 17

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

Accepted Answer

autonomic

Question 18

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 19

Which of the following wraps the spinal canal in three layers?

Accepted Answer

A) White matter 
B) Black matter 
C) Meninges 
D) Yellow matter or corpus amarillo 
E) None of the choices is correct 
A) White matter 
B) Black matter 
C) Meninges 
D) Yellow matter or corpus amarillo 
E) None of the choices is correct

Question 20

The most common neurotransmitter at synapses in the vertebrate nervous system is __________.

Accepted Answer

The answer of The most common neurotransmitter at synapses in...

Exam 33: Nervous Coordination: Nervous System and Sense Organs

If you destroyed the neuromasts in a fish's lateral line,how would you expect this to affect its ability to school?

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

In a chemical synapse,when the wave of depolarization reaches the presynaptic membrane,it triggers the release of

If a nerve to an isolated heart is stimulated and the heartbeat slows,the most reasonable conclusion is that the heart

Internal chemicals communicate from one organ to another target organ or tissue.However,_________ are chemicals released by individuals to influence the behavior of other members of their own species

Both nerves and hormones serve in biological communication.

The active transport device whereby sodium is moved from inside the axon to the outside is referred to as the ______ ______.

The nodes of Ranvier are

The event at the chemical synapse

What is the difference between a reflex arc and a reflex act? List the components and functions of each.

The organ of Corti is

Which statement is NOT true about the cells of the nervous system?

What function does the sodium pump play in neural transmission?

The correct sequence in a reflex arc is

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

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

Which of the following is NOT a glial cell?

Which of the following wraps the spinal canal in three layers?

The most common neurotransmitter at synapses in the vertebrate nervous system is __________.

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

Architectual Pattern of an Animal

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges and Placozoans

Cnidarians and Ctenophores

Acoelomorpha, Platyzoa, and Mesozoa

Polyzoa and Kryptrochozoa

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Trilobites, Chelicerates, and Myriapods

Crustaceans

Hexapods

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 Distribution

Animal Ecology

Filters

The active transport device whereby sodium is moved from inside the axon to the outside is referred to as the .

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