Question 1

Neurotransmitter release can be inhibited by damaging the SNARE complex.

Accepted Answer

A) True 
 B)False

Question 2

Sensory nerves cause muscle contraction.

Accepted Answer

A) True 
 B)False

Question 3

Glial cells normally lose their mitotic ability prior to birth.

Accepted Answer

A) True 
 B)False

Question 4

Ion channels that open in response to depolarization are called

Accepted Answer

A)  ion-gated channels.
B)  voltage-gated channels.
C)  stimulation-gated channels.
D)  potential-gated channels.E) All of the above
F) A) and D)

Question 5

Once an EPSP is created on the postsynaptic neuron,a new action potential is produced down the axon.

Accepted Answer

A) True 
 B)False

Question 6

Sensory neurons

Accepted Answer

A)  are multipolar and carry impulses toward the CNS.
B)  are pseudounipolar and carry impulses toward the CNS.
C)  are bipolar and carry impulses away from the CNS.
D)  are multipolar and carry impulses away from the CNS.E) A) and B)
F) B) and C)

Question 7

The nicotinic ACh receptor is a ligand-gated channel.

Accepted Answer

A) True 
 B)False

Question 8

The most abundant neuropeptide in the brain is

Accepted Answer

A)  neuropeptide Y.
B)  neuropeptide Z.
C)  substance P.
D)  CCK.E) All of the above
F) C) and D)

Question 9

The brain and spinal cord comprise the

Accepted Answer

A)  central nervous system.
B)  peripheral nervous system.
C)  peripheral ganglia.
D)  spinal nerves.E) All of the above
F) C) and D)

Question 10

Synaptic vesicles are docked to the plasma membrane of the axon terminal by a protein complex called

Accepted Answer

A)  boutons.
B)  connexins.
C)  synaptotagmins.
D)  SNARE.E) A) and B)
F) A) and C)

Question 11

The minimum depolarization needed to open Na+ gates is called the

Accepted Answer

A)  repolarization.
B)  threshold.
C)  refractory period.
D)  All-or-none law.E) C) and D)
F) A) and D)

Question 12

Conduction of an action potential in a myelinated axon is called

Accepted Answer

A)  point to point conduction.
B)  saltatory conduction.
C)  refractory conduction.
D)  cable conduction.E) A) and C)
F) None of the above

Question 13

Endogenous opioids transmit impulses of pain.

Accepted Answer

A) True 
 B)False

Question 14

Synaptic plasticity involves structural changes in neurons such as

Accepted Answer

A)  formation of axillary branches
B)  formation of dendritic spines
C)  formation of more axon terminals
D)  mitosis of neuronsE) C) and D)
F) B) and C)

Question 15

Which of the following is NOT true of axonal transport?

Accepted Answer

A)  uses molecular motors
B)  can transport anterograde or retrograde
C)  has one fast and two slow components
D)  is a passive processE) A) and D)
F) C) and D)

Question 16

Excitotoxicity is caused by

Accepted Answer

A)  insufficient synaptic release of glutamate.
B)  excessive synaptic release of glutamate.
C)  GABA inhibition.
D)  insufficient synaptic release of ACh.E) All of the above
F) A) and D)

Question 17

Blocking ____________ channels would prevent neuron depolarization.

Accepted Answer

A)  K+
B)  Cl-
C)  Na+
D)  Mg2+E) A) and B)
F) A) and C)

Question 18

As the intensity of a stimulus increases,more axons will become activated.This process is called

Accepted Answer

A)  threshold.
B)  refraction.
C)  recruitment.
D)  None apply.E) A) and D)
F) None of the above

Question 19

Destruction of astrocytes would decrease the rate at which action potentials are transmitted.

Accepted Answer

A) True 
 B)False

Question 20

Local anesthetics block conduction of action potentials in sensory neurons by

Accepted Answer

A)  inhibiting the release of acetylcholine.
B)  binding to potassium channels.
C)  binding to sodium channels.
D)  binding to calcium channels.E) A) and D)
F) A) and C)

Exam 7: The Nervous System: Neurons and Synapses

Once an EPSP is created on the postsynaptic neuron,a new action potential is produced down the axon.

Correct AnswerverifiedShow Answer

Synaptic vesicles are docked to the plasma membrane of the axon terminal by a protein complex called

Correct AnswerverifiedShow Answer

Endogenous opioids transmit impulses of pain.

Correct AnswerverifiedShow Answer

The brain and spinal cord comprise the

Correct AnswerverifiedShow Answer

Neurotransmitter release can be inhibited by damaging the SNARE complex.

Correct AnswerverifiedShow Answer

Sensory neurons

Correct AnswerverifiedShow Answer

Local anesthetics block conduction of action potentials in sensory neurons by

Correct AnswerverifiedShow Answer

The minimum depolarization needed to open Na+ gates is called the

Correct AnswerverifiedShow Answer

Ion channels that open in response to depolarization are called

Correct AnswerverifiedShow Answer

Glial cells normally lose their mitotic ability prior to birth.

Correct AnswerverifiedShow Answer

Destruction of astrocytes would decrease the rate at which action potentials are transmitted.

Correct AnswerverifiedShow Answer

Conduction of an action potential in a myelinated axon is called

Correct AnswerverifiedShow Answer

Excitotoxicity is caused by

Correct AnswerverifiedShow Answer

Which of the following is NOT true of axonal transport?

Correct AnswerverifiedShow Answer

The most abundant neuropeptide in the brain is

Correct AnswerverifiedShow Answer

As the intensity of a stimulus increases,more axons will become activated.This process is called

Correct AnswerverifiedShow Answer

The nicotinic ACh receptor is a ligand-gated channel.

Correct AnswerverifiedShow Answer

Sensory nerves cause muscle contraction.

Correct AnswerverifiedShow Answer

Blocking ____________ channels would prevent neuron depolarization.

Correct AnswerverifiedShow Answer

Synaptic plasticity involves structural changes in neurons such as

Correct AnswerverifiedShow Answer

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The minimum depolarization needed to open Na⁺ gates is called the

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