Question 1

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 correctF) C) and D)
G) B) and C)

Question 2

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."F) All of the above
G) A) and B)

Question 3

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 4

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 5

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 statementsF) None of the above
G) B) and C)

Question 6

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

Accepted Answer

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

Question 7

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 systemsF) All of the above
G) A) and E)

Question 8

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 9

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 10

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.F) All of the above
G) D) and E)

Question 11

Which of the following is NOT a glial cell?

Accepted Answer

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

Question 12

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

Accepted Answer

autonomic ...

Question 13

What function does the sodium pump play in neural transmission?

Accepted Answer

The sodium pump, also known as the sodiu...

Question 14

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.F) A) and E)
G) B) and D)

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.F) B) and D)
G) A) and E)

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 correctF) A) and E)
G) D) and E)

Question 17

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.F) B) and C)
G) C) and D)

Question 18

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.F) A) and B)
G) None of the above

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 correctF) B) and E)
G) None of the above

Question 20

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)  statolithF) A) and D)
G) A) and E)

Exam 33: Nervous Coordination: Nervous System and Sense Organs

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

Correct Answer
verified
autonomic ...
View Answer

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

The correct sequence in a reflex arc is

Correct Answer
verified

The organ of Corti is

Correct Answer
verified

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

Correct Answer
Answered by ExamLex AI
The lateral line system in fish is a sen...
View Answer

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

Correct Answer
verified

Both nerves and hormones serve in biological communication.

Correct Answer
verified

The event at the chemical synapse

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
Answered by ExamLex AI
A reflex arc and a reflex act are both p...
View Answer

Correct Answer
verified

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

Correct Answer
verified

Which of the following is NOT a glial cell?

Correct Answer
verified

What function does the sodium pump play in neural transmission?

Correct Answer
Answered by ExamLex AI
The sodium pump, also known as the sodiu...
View Answer

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

Correct Answer
verified

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

Correct Answer
verified

The nodes of Ranvier are

Correct Answer
verified

Exam 33: Nervous Coordination: Nervous System and Sense Organs

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

Correct Answerverifiedautonomic ...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The correct sequence in a reflex arc is

Correct AnswerverifiedShow Answer

The organ of Corti is

Correct AnswerverifiedShow Answer

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

Correct AnswerAnswered by ExamLex AIThe lateral line system in fish is a sen...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Both nerves and hormones serve in biological communication.

Correct AnswerverifiedShow Answer

The event at the chemical synapse

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerAnswered by ExamLex AIA reflex arc and a reflex act are both p...View AnswerShow Answer

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is NOT a glial cell?

Correct AnswerverifiedShow Answer

What function does the sodium pump play in neural transmission?

Correct AnswerAnswered by ExamLex AIThe sodium pump, also known as the sodiu...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The nodes of Ranvier are

Correct AnswerverifiedShow Answer

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

Correct Answer
verified
autonomic ...
View Answer

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
The lateral line system in fish is a sen...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
A reflex arc and a reflex act are both p...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
The sodium pump, also known as the sodiu...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified