Question 1

Place the following events involved in drug addiction in the correct sequence.I-The synapse becomes less sensitive, and normal function can only continue in the presence of the drug.II-CNS responds to increased firing by decreasing the number of drug receptors on the cell membrane.III-Drug molecule prevents receptor endocytosis and causes overstimulation of the postsynaptic cell.

Accepted Answer

A)  I, II, III
B)  III, II, I
C)  II, III, I
D)  III, I, IIE) C) and D)
F) A) and B)

Question 2

Which area of the cerebral cortex is important for the formulation of thoughts into speech?

Accepted Answer

A)  Broca's area
B)  the pons
C)  the medulla oblongata
D)  Wernicke's areaE) None of the above
F) A) and B)

Question 3

The membrane of a resting neuron is most permeable to which of the following ions?

Accepted Answer

A)  Cl-
B)  Ca2+
C)  Na+
D)  K+E) A) and C)
F) A) and D)

Question 4

The spinal cord is enclosed by the vertebral column and layers of protective membranes.What are these membranes called?

Accepted Answer

A)  neural net
B)  white matter
C)  dorsal root
D)  meningesE) A) and C)
F) A) and B)

Question 5

What determines the direction of the voltage change that occurs at the postsynaptic membrane?

Accepted Answer

A)  the type of neurotransmitter
B)  the type of second messenger system used
C)  the type(s)  of ions that travel through opened channels
D)  the number of ion channels on the postsynaptic membraneE) C) and D)
F) B) and D)

Question 6

Your roommate is on an ultra-low fat diet to try to lose weight.Given what you know about structure of the nervous system, what advice would you give him?

Accepted Answer

A)  "You should drink large quantities of water, because the brain is mostly water."
B)  "Good for you! Losing weight by any means necessary can only help your brain."
C)  "You should eat some healthy unsaturated fats, like those found in fish, olive oil, and nuts, because your brain needs fatty acids to build the myelin sheaths around your axons."
D)  "You should eat trans fats, from donuts, because 'trans' is short for neurotransmission."E) A) and D)
F) A) and C)

Question 7

A neuron that engages in spatial summation acquires a mutation that causes dendrite overgrowth and promiscuous synapsing.What is the likely outcome?

Accepted Answer

A)  abnormally low frequency of action potentials
B)  summation will not occur
C)  abnormally high frequency of action potentials
D)  action potentials with stronger depolarizationE) A) and D)
F) None of the above

Question 8

Nerve impulses are electrical signals measured across which structure?

Accepted Answer

A)  lipid sheath of Schwann cell
B)  plasma membrane of neuron
C)  synapse
D)  neuromuscular junctionE) B) and C)
F) A) and D)

Question 9

What is the name for the gap into which neurotransmitters are released?

Accepted Answer

A)  gap junction
B)  synaptic cleft
C)  postsynaptic membrane
D)  presynaptic membraneE) B) and C)
F) A) and C)

Question 10

If you were to compare the resting potential of a neuron to a battery, which way is the battery oriented?

Accepted Answer

A)  positive terminal outside of the cell, and negative terminal inside
B)  positive terminal inside of the cell, and negative terminal outside
C)  positive terminal pointing toward the axon, negative terminal toward the dendrite
D)  positive terminal pointing toward the dendrite, negative terminal toward the axonE) B) and D)
F) B) and C)

Question 11

What other cells should you examine for effects from this mutant gene?

Accepted Answer

A)  prefrontal neurons
B)  gustatory neurons
C)  cholinergic neurons
D)  Schwann cellsE) All of the above
F) None of the above

Question 12

Dr.Robinson tapped on a patient's knee with the little hammer, but failed to see the usual kick of the patellar reflex.Since this reflex only involves a few neurons, what part of the nervous system might the doctor most likely be concerned about?

Accepted Answer

A)  parasympathetic nervous system
B)  central nervous system
C)  sympathetic nervous system
D)  peripheral nervous systemE) A) and B)
F) A) and C)

Question 13

What are the branched extensions of a neuron that receive signals called?

Accepted Answer

A)  axons
B)  cell bodies
C)  dendrites
D)  oligodendrocytesE) B) and C)
F) A) and D)

Question 14

What part of the neuron is responsible for most of the "house-keeping" tasks of the cell, including protein synthesis?

Accepted Answer

A)  myelin
B)  axon
C)  dendrite
D)  somaE) A) and B)
F) None of the above

Question 15

Which of the following targets is NOT regulated by the autonomic nervous system?

Accepted Answer

A)  skeletal muscles
B)  cardiac muscles
C)  glands of the body
D)  smooth musclesE) None of the above
F) All of the above

Question 16

What region of the brain integrates visceral activities, body temperature, and heartbeat?

Accepted Answer

A)  medulla oblongata
B)  cerebrum
C)  hypothalamus
D)  thalamusE) B) and C)
F) A) and D)

Question 17

To process information, postsynaptic neurons often add up simultaneous signals from several presynaptic neurons.Which structure and process allow them to do so?

Accepted Answer

A)  axons; temporal summation
B)  axons; spatial summation
C)  dendrites; temporal summation
D)  dendrites; spatial summationE) A) and B)
F) C) and D)

Question 18

When neurons are not producing electrical signals, there is still a voltage difference across their membranes.What is this voltage called?

Accepted Answer

A)  channel-gate bias
B)  electrolyte voltage
C)  equilibrium potential
D)  resting potentialE) A) and B)
F) All of the above

Question 19

Which of the following is not part of the peripheral nervous system?

Accepted Answer

A)  sympathetic division of the autonomic nervous system
B)  spinal cord
C)  parasympathetic division of the autonomic nervous system
D)  somatic nervous systemE) B) and C)
F) A) and D)

Question 20

A cheetah has succeeded in catching a gazelle and has just finished feeding on the carcass.What division of the nervous system has increased in activity?

Accepted Answer

A)  somatic nervous system
B)  parasympathetic nervous system
C)  sympathetic nervous system
D)  parasymbiotic nervous systemE) A) and B)
F) A) and C)

Exam 43: The Nervous System

When neurons are not producing electrical signals, there is still a voltage difference across their membranes.What is this voltage called?

Correct Answer
verified

To process information, postsynaptic neurons often add up simultaneous signals from several presynaptic neurons.Which structure and process allow them to do so?

Correct Answer
verified

The membrane of a resting neuron is most permeable to which of the following ions?

Correct Answer
verified

What is the name for the gap into which neurotransmitters are released?

Correct Answer
verified

A neuron that engages in spatial summation acquires a mutation that causes dendrite overgrowth and promiscuous synapsing.What is the likely outcome?

Correct Answer
verified

What determines the direction of the voltage change that occurs at the postsynaptic membrane?

Correct Answer
verified

Dr.Robinson tapped on a patient's knee with the little hammer, but failed to see the usual kick of the patellar reflex.Since this reflex only involves a few neurons, what part of the nervous system might the doctor most likely be concerned about?

Correct Answer
verified

Which area of the cerebral cortex is important for the formulation of thoughts into speech?

Correct Answer
verified

Your roommate is on an ultra-low fat diet to try to lose weight.Given what you know about structure of the nervous system, what advice would you give him?

Correct Answer
verified

What region of the brain integrates visceral activities, body temperature, and heartbeat?

Correct Answer
verified

What other cells should you examine for effects from this mutant gene?

Correct Answer
verified

Correct Answer
verified

Which of the following targets is NOT regulated by the autonomic nervous system?

Correct Answer
verified

A cheetah has succeeded in catching a gazelle and has just finished feeding on the carcass.What division of the nervous system has increased in activity?

Correct Answer
verified

If you were to compare the resting potential of a neuron to a battery, which way is the battery oriented?

Correct Answer
verified

Which of the following is not part of the peripheral nervous system?

Correct Answer
verified

What part of the neuron is responsible for most of the "house-keeping" tasks of the cell, including protein synthesis?

Correct Answer
verified

The spinal cord is enclosed by the vertebral column and layers of protective membranes.What are these membranes called?

Correct Answer
verified

What are the branched extensions of a neuron that receive signals called?

Correct Answer
verified

Nerve impulses are electrical signals measured across which structure?

Correct Answer
verified

Exam 43: The Nervous System

When neurons are not producing electrical signals, there is still a voltage difference across their membranes.What is this voltage called?

Correct AnswerverifiedShow Answer

To process information, postsynaptic neurons often add up simultaneous signals from several presynaptic neurons.Which structure and process allow them to do so?

Correct AnswerverifiedShow Answer

The membrane of a resting neuron is most permeable to which of the following ions?

Correct AnswerverifiedShow Answer

What is the name for the gap into which neurotransmitters are released?

Correct AnswerverifiedShow Answer

A neuron that engages in spatial summation acquires a mutation that causes dendrite overgrowth and promiscuous synapsing.What is the likely outcome?

Correct AnswerverifiedShow Answer

What determines the direction of the voltage change that occurs at the postsynaptic membrane?

Correct AnswerverifiedShow Answer

Dr.Robinson tapped on a patient's knee with the little hammer, but failed to see the usual kick of the patellar reflex.Since this reflex only involves a few neurons, what part of the nervous system might the doctor most likely be concerned about?

Correct AnswerverifiedShow Answer

Which area of the cerebral cortex is important for the formulation of thoughts into speech?

Correct AnswerverifiedShow Answer

Your roommate is on an ultra-low fat diet to try to lose weight.Given what you know about structure of the nervous system, what advice would you give him?

Correct AnswerverifiedShow Answer

What region of the brain integrates visceral activities, body temperature, and heartbeat?

Correct AnswerverifiedShow Answer

What other cells should you examine for effects from this mutant gene?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following targets is NOT regulated by the autonomic nervous system?

Correct AnswerverifiedShow Answer

A cheetah has succeeded in catching a gazelle and has just finished feeding on the carcass.What division of the nervous system has increased in activity?

Correct AnswerverifiedShow Answer

If you were to compare the resting potential of a neuron to a battery, which way is the battery oriented?

Correct AnswerverifiedShow Answer

Which of the following is not part of the peripheral nervous system?

Correct AnswerverifiedShow Answer

What part of the neuron is responsible for most of the "house-keeping" tasks of the cell, including protein synthesis?

Correct AnswerverifiedShow Answer

The spinal cord is enclosed by the vertebral column and layers of protective membranes.What are these membranes called?

Correct AnswerverifiedShow Answer

What are the branched extensions of a neuron that receive signals called?

Correct AnswerverifiedShow Answer

Nerve impulses are electrical signals measured across which structure?

Correct AnswerverifiedShow Answer

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