Question 1

How do cholinesterase inhibitors improve the learning and memory of people who are suffering from Alzheimer's Disease?

Accepted Answer

A)  Cholinesterase inhibitors will increase the levels of acetylcholine in the brain.This will increase the neural functioning in brain regions associated with learning and memory.
B)  Cholinesterase inhibitors will decrease the levels of acetylcholine in the brain.This will increase the neural functioning in brain regions associated with learning and memory.
C)  Cholinesterase inhibitors will increase the levels of testosterone in the brain.This will increase the neural functioning in brain regions associated with learning and memory.
D)  Cholinesterase inhibitors will decrease the levels of cerebral spinal fluid in the brain.This will decrease neural pressure associated with the brain regions associated with learning and memory.E) All of the above
F) A) and B)

Question 2

The primary functions of the spinal cord are

Accepted Answer

A)  to integrate intelligence with primal instinct and to coordinate memory.
B)  to coordinate speech,taste,smell,vision,and hearing.
C)  to serve as a center for reflex actions and to facilitate communication between the brain and spinal nerves.
D)  controlling muscle activity and maintaining balance.
E)  local control and decision-making for local anatomy.F) None of the above
G) A) and E) C

Question 3

If a person steps on a tack their somatic system will take over and produce a reflex action.A reflex action

Accepted Answer

A)  is an automatic,involuntary response.
B)  does not require the central nervous system.
C)  is normally controlled consciously.
D)  has no protective value.
E)  is only found in humans.F) All of the above
G) C) and D)

Question 4

What structure of the spinal cord carries motor impulses from the brain?

Accepted Answer

A)  ventral root
B)  dorsal root
C)  dorsal root ganglion
D)  dorsal hornE) B) and D)
F) A) and C)

Question 5

Action potentials travel down nonmyelinated axons at ________ action potentials travel down myelinated axons.

Accepted Answer

A)  slower speeds than
B)  faster speeds than
C)  the same speed
D)  variable speeds,sometimes faster and sometimes slower thanE) A) and D)
F) All of the above

Question 6

Examine the picture to answer the following questions and identify the labeled structures.  A: ________
B: ________
C: ________
D: ________
E: Is the neuron pictured a sensory,association or motor neuron? What is its function?
F: Is the neuron multipolar or unipolar? Explain your answer.

Accepted Answer

A: axon B: cell body C: myelin sheath or...

Question 7

What structure in the mammalian brain is enlarged and is responsible for higher mental processes?

Accepted Answer

A)  forebrain
B)  hindbrain
C)  midbrain
D)  cerebellum
E)  cerebrumF) A) and B)
G) B) and D)

Question 8

Use the word bank to identify the labeled structures pictured below: sacral nerves,lumbar nerves,brain,common fibular nerve,ulnar nerve,spinal cord,cranial nerves,thoracic nerves,cervical nerves,radial nerve,tibial nerve,median nerve,sciatic nerve  A: ________
B: ________
C: ________
D: ________
E: ________
F: ________
G: ________
H: ________
I: ________
J: ________
K: ________
L: ________
M: ________

Accepted Answer

A: brain B: cranial nerves C: cervical n...

Question 9

Starting with the simplest and moving towards more complex,what is the correct evolutionary sequence of animals in regards to the complexity of their nervous systems?

Accepted Answer

A)  sponges - hydras - planarians - annelids - molluscs - fish
B)  sponges - planarians - hydras - annelids - molluscs - fish
C)  hydras - sponges - planarians - annelids - molluscs - fish
D)  sponges - hydras - planarians - molluscs - annelids - fish
E)  annelids - sponges - hydras - planarians - molluscs - fishF) A) and B)
G) B) and C)

Question 10

Which of the following statements about an action potential is NOT true?

Accepted Answer

A)  Repolarization occurs when potassium leaves the axon.
B)  There is a rapid change in polarity from about -70 mV to about +35 mV during depolarization.
C)  An action potential takes 2 to 5 seconds.
D)  Depolarization occurs when sodium gates open and allow sodium ions to enter the axon.
E)  Potassium gates open after the sodium gates and allow potassium ions to leave the cell.F) D) and E)
G) C) and D)

Question 11

Ion concentration differences produce an action potential creating a signal.The difference between a weak signal and an intense signal is

Accepted Answer

A)  the action potential is graduated and a weak signal causes a small change in polarity.
B)  weak stimuli only open sodium gates,strong signal also open potassium gates.
C)  the frequency at which an axon fires.
D)  a strong signal does not allow repolarization but sends a constant flow of ions.
E)  All of the choices are correct.F) A) and B)
G) None of the above C

Question 12

What portion of the brain provides reasoning to keep us from acting out strong feelings?

Accepted Answer

A)  brain stem
B)  pineal gland
C)  reticular activating system
D)  limbic systemE) A) and C)
F) None of the above

Question 13

At a synapse,

Accepted Answer

A)  synaptic vesicles fuse with the postsynaptic membrane.
B)  synaptic vesicles fuse with the pre-synaptic membrane.
C)  neurotransmitters diffuse across the synaptic cleft.
D)  neurotransmitters are actively transported across the synaptic cleft.
E)  synaptic vesicles fuse with the pre-synaptic membrane and neurotransmitters diffuse across the synaptic cleft.F) C) and E)
G) A) and B)

Question 14

Describe the three types of neurons found in the body and indicate their functions.

Accepted Answer

1.Sensory (afferent)neurons are responsi...

Question 15

An animal with a simple netlike nervous system is the

Accepted Answer

A)  earthworm.
B)  cat.
C)  hydra.
D)  octopus.
E)  planarian.F) B) and D)
G) A) and B)

Question 16

Which of the following statements about the brain is NOT correct?

Accepted Answer

A)  The pineal gland secretes serotonin,which is involved in mood changes.
B)  The thalamus relays sensory input from lower brain areas to the cerebrum.
C)  The cerebellum functions in muscle coordination,posture,and balance.
D)  The medulla oblongata has reflex centers for vomiting,coughing,sneezing,and swallowing.
E)  The hypothalamus is concerned with homeostasis and regulation of thirst,hunger,and blood pressure.F) All of the above
G) A) and B)

Question 17

Which of the following statements about the cerebrum is NOT true?

Accepted Answer

A)  It is the largest part of the human brain.
B)  The gray matter is outermost.
C)  The right hemisphere is associated with analytical reasoning and the left hemisphere is associated with artistic and musical ability.
D)  The two cerebral hemispheres are connected by the corpus callosum.
E)  The cerebrum coordinates the activities of the other parts of the brain.F) C) and E)
G) A) and C)

Question 18

When a finger or other appendage is severed in an accident,it is possible to surgically rejoin most tissues (bone,skin,etc.) ,which will then grow and heal.However,a cut through an appendage nerve is currently very difficult to reconnect.What structures are severed when the nerves in an appendage are severed?

Accepted Answer

A)  axons
B)  synapses
C)  cell bodies
D)  dendrites
E)  interneuronsF) A) and E)
G) A) and B)

Question 19

The sodium-potassium pump is primarily responsible for

Accepted Answer

A)  the resting potential.
B)  the action potential.
C)  the excretion of salts.
D)  the contraction of muscle fibers.
E)  maintaining isotonic water balance.F) A) and E)
G) B) and E)

Question 20

The likely effect on a neuron of two excitatory signals and twenty inhibitory signals is

Accepted Answer

A)  transmission of a nerve impulse.
B)  transmission of a nerve impulse releasing inhibitory neurotransmitters at the next synapse.
C)  prohibiting the axon from firing.
D)  confused integration.E) B) and C)
F) A) and B) C

Exam 37: Neurons and Nervous Systems

How do cholinesterase inhibitors improve the learning and memory of people who are suffering from Alzheimer's Disease?

Correct Answer
verified

The primary functions of the spinal cord are

Correct Answer
verified
C

If a person steps on a tack their somatic system will take over and produce a reflex action.A reflex action

Correct Answer
verified

What structure of the spinal cord carries motor impulses from the brain?

Correct Answer
verified

Action potentials travel down nonmyelinated axons at ________ action potentials travel down myelinated axons.

Correct Answer
verified

Examine the picture to answer the following questions and identify the labeled structures. A: B: C: D: E: Is the neuron pictured a sensory,association or motor neuron? What is its function? F: Is the neuron multipolar or unipolar? Explain your answer.

Correct Answer
verified
A: axon B: cell body C: myelin sheath or...
View Answer

What structure in the mammalian brain is enlarged and is responsible for higher mental processes?

Correct Answer
verified

Use the word bank to identify the labeled structures pictured below: sacral nerves,lumbar nerves,brain,common fibular nerve,ulnar nerve,spinal cord,cranial nerves,thoracic nerves,cervical nerves,radial nerve,tibial nerve,median nerve,sciatic nerve A: B: C: D: E: F: G: H: I: J: K: L: M:

Correct Answer
verified
A: brain B: cranial nerves C: cervical n...
View Answer

Starting with the simplest and moving towards more complex,what is the correct evolutionary sequence of animals in regards to the complexity of their nervous systems?

Correct Answer
verified

Which of the following statements about an action potential is NOT true?

Correct Answer
verified

Ion concentration differences produce an action potential creating a signal.The difference between a weak signal and an intense signal is

Correct Answer
verified
C

What portion of the brain provides reasoning to keep us from acting out strong feelings?

Correct Answer
verified

At a synapse,

Correct Answer
verified

Describe the three types of neurons found in the body and indicate their functions.

Correct Answer
verified
1.Sensory (afferent)neurons are responsi...
View Answer

An animal with a simple netlike nervous system is the

Correct Answer
verified

Which of the following statements about the brain is NOT correct?

Correct Answer
verified

Which of the following statements about the cerebrum is NOT true?

Correct Answer
verified

Correct Answer
verified

The sodium-potassium pump is primarily responsible for

Correct Answer
verified

The likely effect on a neuron of two excitatory signals and twenty inhibitory signals is

Correct Answer
verified
C

Exam 37: Neurons and Nervous Systems

How do cholinesterase inhibitors improve the learning and memory of people who are suffering from Alzheimer's Disease?

Correct AnswerverifiedShow Answer

The primary functions of the spinal cord are

Correct AnswerverifiedC

If a person steps on a tack their somatic system will take over and produce a reflex action.A reflex action

Correct AnswerverifiedShow Answer

What structure of the spinal cord carries motor impulses from the brain?

Correct AnswerverifiedShow Answer

Action potentials travel down nonmyelinated axons at ________ action potentials travel down myelinated axons.

Correct AnswerverifiedShow Answer

Examine the picture to answer the following questions and identify the labeled structures. A: ________ B: ________ C: ________ D: ________ E: Is the neuron pictured a sensory,association or motor neuron? What is its function? F: Is the neuron multipolar or unipolar? Explain your answer.

Correct AnswerverifiedA: axon B: cell body C: myelin sheath or...View AnswerShow Answer

What structure in the mammalian brain is enlarged and is responsible for higher mental processes?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedA: brain B: cranial nerves C: cervical n...View AnswerShow Answer

Starting with the simplest and moving towards more complex,what is the correct evolutionary sequence of animals in regards to the complexity of their nervous systems?

Correct AnswerverifiedShow Answer

Which of the following statements about an action potential is NOT true?

Correct AnswerverifiedShow Answer

Ion concentration differences produce an action potential creating a signal.The difference between a weak signal and an intense signal is

Correct AnswerverifiedC

What portion of the brain provides reasoning to keep us from acting out strong feelings?

Correct AnswerverifiedShow Answer

At a synapse,

Correct AnswerverifiedShow Answer

Describe the three types of neurons found in the body and indicate their functions.

Correct Answerverified1.Sensory (afferent)neurons are responsi...View AnswerShow Answer

An animal with a simple netlike nervous system is the

Correct AnswerverifiedShow Answer

Which of the following statements about the brain is NOT correct?

Correct AnswerverifiedShow Answer

Which of the following statements about the cerebrum is NOT true?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The sodium-potassium pump is primarily responsible for

Correct AnswerverifiedShow Answer

The likely effect on a neuron of two excitatory signals and twenty inhibitory signals is

Correct AnswerverifiedC

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
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Correct Answer
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Correct Answer
verified

Examine the picture to answer the following questions and identify the labeled structures. A: B: C: D: E: Is the neuron pictured a sensory,association or motor neuron? What is its function? F: Is the neuron multipolar or unipolar? Explain your answer.

Correct Answer
verified
A: axon B: cell body C: myelin sheath or...
View Answer

Correct Answer
verified

Correct Answer
verified
A: brain B: cranial nerves C: cervical n...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
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Correct Answer
verified

Correct Answer
verified
1.Sensory (afferent)neurons are responsi...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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C