Question 1

The division of the nervous system that integrates sensory information and coordinates the body's response is the:

Accepted Answer

A)  Peripheral nervous system
B)  Central nervous system
C)  Somatic nervous system
D)  Autonomic nervous system
E)  Sympathetic nervous systemF) A) and B)
G) A) and C)

Question 2

What does the puffer fish neurotoxin tetrodotoxin directly inhibit?

Accepted Answer

A)  Proteins involved in active transport
B)  Channel proteins involved in osmosis
C)  Proteins involved in ATP synthesis
D)  Channel proteins involved in diffusion
E)  Relaxation of musclesF) A) and B)
G) C) and D)

Question 3

Acetylcholine is which of the following?

Accepted Answer

A)  An enzyme
B)  A neurotransmitter
C)  A voltage gated ion channel
D)  A receptor
E)  A source of fuel for neuronsF) A) and E)
G) A) and C)

Question 4

Molecules produced by humans that influence mood and the perception of pain are opiates.

Accepted Answer

A) True 
 B)False

Question 5

Usually nerve impulses travel from one neuron to another by:

Accepted Answer

A)  Neurotransmitters
B)  Action potentials
C)  Resting potentials
D)  Threshold potentials
E)  Nodes of RanvierF) B) and E)
G) All of the above

Question 6

The cells that detect internal and external conditions are:

Accepted Answer

A)  Sensors
B)  Motivators
C)  Effectors
D)  Collaborators
E)  AxonsF) None of the above
G) A) and B)

Question 7

A typical neuron consists of a cell body,dendrites,and an axon.

Accepted Answer

A) True 
 B)False

Question 8

If a person has a stroke and their speech becomes impaired,which region of the brain was likely to be affected?

Accepted Answer

A)  Parietal lobe
B)  Frontal lobe
C)  Occipital lobe
D)  Temporal lobe
E)  BrainstemF) A) and C)
G) A) and B)

Question 9

The area of a neuron where most neural impulses begin that has a higher concentration of sodium channels than the cell body or dendrite is a:

Accepted Answer

A)  Trigger zone
B)  Axon
C)  Synapse
D)  Schwann cell
E)  Node of RanvierF) A) and B)
G) A) and C)

Question 10

The three types of neurons in the nervous system of humans are:

Accepted Answer

A)  Interneurons, synaptic neurons, and neuroglia
B)  Synaptic neurons, motor neurons, and Schwann cells
C)  Sensory neurons, interneurons, and motor neurons
D)  Schwann cells, sensory neurons, and neuroglia
E)  Synaptic neurons, motor neurons, and sensory neuronsF) A) and D)
G) All of the above

Question 11

Toxins released by black widow spider venom cause an explosive release of acetylcholine from neurons.These toxins cause paralysis by:

Accepted Answer

A)  Inhibiting synthesis of acetylcholine
B)  Triggering increased exocytosis of vesicles containing acetylcholine
C)  Triggering increased synthesis of acetylcholine
D)  Inhibiting exocytosis of vesicles containing acetylcholine
E)  Blocking diffusion of acetylcholine out through channel proteinsF) All of the above
G) B) and D)

Question 12

The junctions between one neuron and another neuron are called:

Accepted Answer

A)  Axons
B)  Dendrites
C)  Synapses
D)  Trigger zones
E)  Nodes of RanvierF) A) and C)
G) A) and E)

Question 13

The rounded part of a neuron containing the nucleus and mitochondria is the:

Accepted Answer

A)  Node of Ranvier
B)  Axon
C)  Synapse
D)  Dendrite
E)  Cell bodyF) A) and E)
G) B) and C)

Question 14

The division of the peripheral nervous system that carries signals to voluntary muscles is the:

Accepted Answer

A)  Somatic system
B)  Autonomic system
C)  Sympathetic system
D)  Parasympathetic system
E)  None of the above are correctF) All of the above
G) A) and B)

Question 15

The part of the brain that controls the qualities of what we consider the "mind" is the:

Accepted Answer

A)  Cerebellum
B)  Hypothalamus
C)  Cerebrum
D)  Medulla oblongata
E)  PonsF) B) and D)
G) A) and B)

Question 16

In figure 25.2,the evolution of nervous systems in vertebrates and invertebrates is shown.Given that humans who eat clams contaminated with saxitoxin develop paralysis,which of the following statements is most likely correct?

Accepted Answer

A)  Clams and humans have very distinct nervous systems
B)  Clams and humans both have a spinal cord
C)  Na+ transporters in clams and humans evolved from a common ancestor
D)  Clams and humans have identical nervous systems
E)  Na+ transporters in clams and humans work by separate mechanismsF) D) and E)
G) A) and B)

Question 17

In nerve impulse transmission the neuron sending the message across a synapse is called the:

Accepted Answer

A)  Postsynaptic cell
B)  Schwann cell
C)  Presynaptic cell
D)  Motor cell
E)  Receptor neuronF) B) and E)
G) C) and D)

Question 18

A motor neuron's __________ and ___________ reside in the central nervous system,but its ____________ extends into the peripheral nervous system.

Accepted Answer

A)  Cell body, dendrites, axon
B)  Axon, cell body, trigger zone
C)  Dendrites, axon, cell body
D)  Axon, cell body, dendrites
E)  None of the above are correctF) A) and B)
G) A) and C)

Question 19

During an action potential sodium ions pour into the cell.

Accepted Answer

A) True 
 B)False

Question 20

How would exposure to saxitoxin from algae cause changes in clams?

Accepted Answer

A)  Saxitoxin would cause mutations to occur in the clam's DNA
B)  Saxitoxin would increase the mutation rates in clams
C)  Saxitoxin would select existing mutations in the clam population
D)  Clams sensitive to saxitoxin would migrate away from the algae bloom
E)  Clams would want to change their Na+ transporters to become resistant to saxitoxinF) A) and B)
G) B) and D)

Exam 25: The Nervous System

The division of the peripheral nervous system that carries signals to voluntary muscles is the:

Correct AnswerverifiedShow Answer

The junctions between one neuron and another neuron are called:

Correct AnswerverifiedShow Answer

Toxins released by black widow spider venom cause an explosive release of acetylcholine from neurons.These toxins cause paralysis by:

Correct AnswerverifiedShow Answer

In nerve impulse transmission the neuron sending the message across a synapse is called the:

Correct AnswerverifiedShow Answer

During an action potential sodium ions pour into the cell.

Correct AnswerverifiedShow Answer

The area of a neuron where most neural impulses begin that has a higher concentration of sodium channels than the cell body or dendrite is a:

Correct AnswerverifiedShow Answer

Usually nerve impulses travel from one neuron to another by:

Correct AnswerverifiedShow Answer

What does the puffer fish neurotoxin tetrodotoxin directly inhibit?

Correct AnswerverifiedShow Answer

Molecules produced by humans that influence mood and the perception of pain are opiates.

Correct AnswerverifiedShow Answer

In figure 25.2,the evolution of nervous systems in vertebrates and invertebrates is shown.Given that humans who eat clams contaminated with saxitoxin develop paralysis,which of the following statements is most likely correct?

Correct AnswerverifiedShow Answer

The rounded part of a neuron containing the nucleus and mitochondria is the:

Correct AnswerverifiedShow Answer

If a person has a stroke and their speech becomes impaired,which region of the brain was likely to be affected?

Correct AnswerverifiedShow Answer

A typical neuron consists of a cell body,dendrites,and an axon.

Correct AnswerverifiedShow Answer

Acetylcholine is which of the following?

Correct AnswerverifiedShow Answer

How would exposure to saxitoxin from algae cause changes in clams?

Correct AnswerverifiedShow Answer

A motor neuron's __________ and ___________ reside in the central nervous system,but its ____________ extends into the peripheral nervous system.

Correct AnswerverifiedShow Answer

The cells that detect internal and external conditions are:

Correct AnswerverifiedShow Answer

The three types of neurons in the nervous system of humans are:

Correct AnswerverifiedShow Answer

The division of the nervous system that integrates sensory information and coordinates the body's response is the:

Correct AnswerverifiedShow Answer

The part of the brain that controls the qualities of what we consider the "mind" is the:

Correct AnswerverifiedShow Answer

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A motor neuron's ____ and _ reside in the central nervous system,but its ________ extends into the peripheral nervous system.

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