Question 1

Nerve impulses travel along the long cellular extension of the neuron called the

Accepted Answer

A)  axons.
B)  cell bodies.
C)  dendrites.
D)  neurons.
E)  synapses.F) A) and D)
G) A) and C)

Question 2

The electrical impulse travels outward from the cell body along a(n)

Accepted Answer

A)  axon.
B)  dendrite.
C)  Ranvier cell.
D)  Schwann cell.
E)  synapsE.F) C) and D)
G) A) and B)

Question 3

When nerve cells are not producing electrical responses,there is still a voltage difference across their membranes,termed the

Accepted Answer

A)  channelgate bias.
B)  electrolyte voltage.
C)  equilibrium potential.
D)  resting potential.
E)  ion current.F) B) and E)
G) A) and C)

Question 4

The main ion channel responsible for the action potential is

Accepted Answer

A)  the voltage-gated sodium channel.
B)  the voltage-gated potassium channel.
C)  the ligand-gated sodium channel.
D)  the ligand-gated potassium channel.
E)  the non-gated sodium channel.F) C) and E)
G) D) and E)

Question 5

All of the following are true about the cerebral cortex except

Accepted Answer

A)  it is a layer of densely packed nerve cells within the gray matter.
B)  in humans,it accounts for roughly 10% of all of brain neurons.
C)  in mammals,it is replaced by motor and sensory cortices.
D)  it contains the associative cortex.
E)  the associative cortex is the site of higher mental activities.F) A) and D)
G) A) and C)

Question 6

The major subdivisions of the CNS are paired with their function.Select the mismatched pairing.

Accepted Answer

A)  Medulla oblongata-sensory nuclei
B)  Pons-reticular activating system
C)  Cerebellum-relay station for ascending sensory and descending tracts
D)  Corpus callosum-connects the two brain hemispheres
E)  Hippocampus-memoryF) None of the above
G) B) and C)

Question 7

The postganglionic neuron of the parasympathetic system releases which neurotransmitter?

Accepted Answer

A)  acetylcholine
B)  norepinephrine
C)  glutamate
D)  GABA
E)  glycineF) C) and D)
G) B) and C)

Question 8

The effect of myelin and nodes of Ranvier is to make nerve impulses travel

Accepted Answer

A)  away from as well as toward the cell body.
B)  faster.
C)  in many directions at once.
D)  laterally from axon to axon.
E)  slower.F) A) and B)
G) All of the above

Question 9

All of the animal phyla listed have a network of nerve cells for gathering information from the environment except

Accepted Answer

A)  sponges.
B)  cnidaria.
C)  platyhelminthes.
D)  nematoda.
E)  mollusca.F) B) and E)
G) C) and E)

Question 10

The neurotransmitter that is released from the motor neuron,and the one that functions at the neuromuscular junction is ... ,

Accepted Answer

A)  acetylcholine.
B)  GABA.
C)  ephinephrine.
D)  dopamine.
E)  serotonin.F) A) and B)
G) B) and E)

Question 11

Which of the following drugs has been discovered to bind to acetylcholine receptors?

Accepted Answer

A)  serotonin reuptake inhibitors
B)  thorazine
C)  cocaine
D)  codeine
E)  nicotineF) C) and D)
G) All of the above

Question 12

Which of the figures shows the correct mechanism for the sodium-potassium pump?

Accepted Answer

A)  A
B)  B
C)  C
D)  DE) A) and B)
F) B) and C)

Question 13

The limbic system has all of the following features except

Accepted Answer

A)  it contains hippocampus and amygdaliA.
B)  it resides deep within the cerebrum.
C)  it is responsible for emotional responses.
D)  it is believed to be important in the formation and recall of memories.
E)  it is part of the hypothalamus.F) A) and E)
G) A) and D)

Question 14

The spinal cord is enclosed and protected by the vertebral column and layers of membranes called

Accepted Answer

A)  neural net.
B)  white matter.
C)  dorsal root.
D)  meninges.
E)  viscera.F) A) and B)
G) C) and D)

Question 15

For each 3 Na+ ions pumped outward,the sodium-potassium pump takes in

Accepted Answer

A)  3 Cl-.
B)  2 K+.
C)  3 K+.
D)  2 NaCl molecules.
E)  3 water molecules.F) None of the above
G) A) and E)

Question 16

The cerebrum consists of all of the following hemispheres except the

Accepted Answer

A)  frontal.
B)  parietal.
C)  optiC.
D)  temporal.
E)  occipital.F) A) and B)
G) C) and E)

Question 17

Place the following events involved in drug addiction,in sequence.
I-The synapse is less sensitive when the drug is removed,normal functioning can only ensue by continuing to take the drug.
II-CNS responds to increased firing by decreasing the number of receptors.
III-Drug molecule prevents reabsorption and causes overstimulation of post-synaptic membrane.

Accepted Answer

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

Question 18

The hippocampus and amygdala are,together with the hypothalamus,the major components of the ______ system.

Accepted Answer

A)  reticular-activating
B)  reflex
C)  parasympathetic
D)  limbic
E)  autonomicF) All of the above
G) A) and C)

Question 19

In vertebrates,the ______ nervous system is composed of the brain and the spinal cord.

Accepted Answer

A)  peripheral
B)  central
C)  somatic
D)  autonomic
E)  sympatheticF) A) and C)
G) A) and D)

Question 20

The region of the brain that integrates visceral activities,body temperature,and heartbeat is the

Accepted Answer

A)  medulla oblongatA.
B)  cerebrum.
C)  hypothalamus.
D)  thalamus.
E)  corpus callosum.F) None of the above
G) D) and E)

Exam 44: The Nervous System

The cerebrum consists of all of the following hemispheres except the

Correct Answer
verified

The main ion channel responsible for the action potential is

Correct Answer
verified

All of the animal phyla listed have a network of nerve cells for gathering information from the environment except

Correct Answer
verified

In vertebrates,the ______ nervous system is composed of the brain and the spinal cord.

Correct Answer
verified

The major subdivisions of the CNS are paired with their function.Select the mismatched pairing.

Correct Answer
verified

The spinal cord is enclosed and protected by the vertebral column and layers of membranes called

Correct Answer
verified

The neurotransmitter that is released from the motor neuron,and the one that functions at the neuromuscular junction is ... ,

Correct Answer
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Correct Answer
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The limbic system has all of the following features except

Correct Answer
verified

All of the following are true about the cerebral cortex except

Correct Answer
verified

The hippocampus and amygdala are,together with the hypothalamus,the major components of the ______ system.

Correct Answer
verified

The region of the brain that integrates visceral activities,body temperature,and heartbeat is the

Correct Answer
verified

The postganglionic neuron of the parasympathetic system releases which neurotransmitter?

Correct Answer
verified

The effect of myelin and nodes of Ranvier is to make nerve impulses travel

Correct Answer
verified

The electrical impulse travels outward from the cell body along a(n)

Correct Answer
verified

When nerve cells are not producing electrical responses,there is still a voltage difference across their membranes,termed the

Correct Answer
verified

Which of the figures shows the correct mechanism for the sodium-potassium pump?

Correct Answer
verified

Nerve impulses travel along the long cellular extension of the neuron called the

Correct Answer
verified

For each 3 Na⁺ ions pumped outward,the sodium-potassium pump takes in

Correct Answer
verified

Which of the following drugs has been discovered to bind to acetylcholine receptors?

Correct Answer
verified

Exam 44: The Nervous System

The cerebrum consists of all of the following hemispheres except the

Correct AnswerverifiedShow Answer

The main ion channel responsible for the action potential is

Correct AnswerverifiedShow Answer

All of the animal phyla listed have a network of nerve cells for gathering information from the environment except

Correct AnswerverifiedShow Answer

In vertebrates,the ______ nervous system is composed of the brain and the spinal cord.

Correct AnswerverifiedShow Answer

The major subdivisions of the CNS are paired with their function.Select the mismatched pairing.

Correct AnswerverifiedShow Answer

The spinal cord is enclosed and protected by the vertebral column and layers of membranes called

Correct AnswerverifiedShow Answer

The neurotransmitter that is released from the motor neuron,and the one that functions at the neuromuscular junction is ... ,

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The limbic system has all of the following features except

Correct AnswerverifiedShow Answer

All of the following are true about the cerebral cortex except

Correct AnswerverifiedShow Answer

The hippocampus and amygdala are,together with the hypothalamus,the major components of the ______ system.

Correct AnswerverifiedShow Answer

The region of the brain that integrates visceral activities,body temperature,and heartbeat is the

Correct AnswerverifiedShow Answer

The postganglionic neuron of the parasympathetic system releases which neurotransmitter?

Correct AnswerverifiedShow Answer

The effect of myelin and nodes of Ranvier is to make nerve impulses travel

Correct AnswerverifiedShow Answer

The electrical impulse travels outward from the cell body along a(n)

Correct AnswerverifiedShow Answer

When nerve cells are not producing electrical responses,there is still a voltage difference across their membranes,termed the

Correct AnswerverifiedShow Answer

Which of the figures shows the correct mechanism for the sodium-potassium pump?

Correct AnswerverifiedShow Answer

Nerve impulses travel along the long cellular extension of the neuron called the

Correct AnswerverifiedShow Answer

For each 3 Na+ ions pumped outward,the sodium-potassium pump takes in

Correct AnswerverifiedShow Answer

Which of the following drugs has been discovered to bind to acetylcholine receptors?

Correct AnswerverifiedShow Answer

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For each 3 Na⁺ ions pumped outward,the sodium-potassium pump takes in

Correct Answer
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Correct Answer
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