Question 1

Neural stem cells can be harvested from autopsies and stored, alive, in banks, whereas neurons cannot, because

Accepted Answer

A)  people do not will them to science. 
B)  neural stem cells have lower oxygen and energy requirements than neurons. 
C)  neural stem cells have higher oxygen and energy requirements than neurons. 
D)  neural stem cells have more globular shapes than neurons. 
A)  people do not will them to science. 
B)  neural stem cells have lower oxygen and energy requirements than neurons. 
C)  neural stem cells have higher oxygen and energy requirements than neurons. 
D)  neural stem cells have more globular shapes than neurons.

Question 2

A myelinated nerve fiber is ______, whereas an unmyelinated nerve fiber is ______.

Accepted Answer

A)  gray, and composing the gray matter of the brain and spinal cord; white, and composing the white matter of the brain and spinal cord 
B)  white, and composing the gray matter of the brain and spinal cord; gray, and composing the white matter of the brain and spinal cord 
C)  white, and composing the white matter of the brain and spinal cord; gray, and composing the gray matter of the brain and spinal cord 
D)  white, and composing the gray matter of the brain and spinal cord; red, and composing the white matter of the brain and spinal cord 
A)  gray, and composing the gray matter of the brain and spinal cord; white, and composing the white matter of the brain and spinal cord 
B)  white, and composing the gray matter of the brain and spinal cord; gray, and composing the white matter of the brain and spinal cord 
C)  white, and composing the white matter of the brain and spinal cord; gray, and composing the gray matter of the brain and spinal cord 
D)  white, and composing the gray matter of the brain and spinal cord; red, and composing the white matter of the brain and spinal cord

Question 3

Which of the following is(are) a type of neuroglia?

Accepted Answer

A)  Astrocyte 
B)  Oligodendrocyte 
C)  Schwann cell 
D)  All of the above 
A)  Astrocyte 
B)  Oligodendrocyte 
C)  Schwann cell 
D)  All of the above

Question 4

Neurons that conduct impulses from the CNS to muscles or glands are

Accepted Answer

A)  sensory neurons. 
B)  interneurons. 
C)  motor neurons. 
D)  unipolar neurons. 
A)  sensory neurons. 
B)  interneurons. 
C)  motor neurons. 
D)  unipolar neurons.

Question 5

Sensory receptors are part of the CNS.

Accepted Answer

A) True 
 B)False

Question 6

Astrocytes structurally support neurons and also provide important signals and nutrients to neurons.

Accepted Answer

A) True 
 B)False

Question 7

Clusters of neuron cell bodies in the PNS are called _____.

Accepted Answer

A)  neuromas 
B)  axons 
C)  ganglia 
D)  nuclei 
A)  neuromas 
B)  axons 
C)  ganglia 
D)  nuclei

Question 8

Viagra is a drug used to treat erectile dysfunction by dilating arteries in the penis. The neurotransmitter that Viagra affects is

Accepted Answer

A)  acetylcholine. 
B)  nitric oxide. 
C)  serotonin. 
D)  histamine. 
A)  acetylcholine. 
B)  nitric oxide. 
C)  serotonin. 
D)  histamine.

Question 9

Drugs that increase the actions of norepinephrine and/or serotonin by keeping them in synapses longer are most likely used to treat

Accepted Answer

A)  multiple sclerosis. 
B)  Tay-Sachs disease. 
C)  clinical depression. 
D)  erectile dysfunction. 
A)  multiple sclerosis. 
B)  Tay-Sachs disease. 
C)  clinical depression. 
D)  erectile dysfunction.

Question 10

An action potential is triggered if

Accepted Answer

A)  EPSPs overpower IPSPs. 
B)  IPSPs overpower EPSPs. 
C)  chloride channels open. 
D)  the membrane hyperpolarizes. 
A)  EPSPs overpower IPSPs. 
B)  IPSPs overpower EPSPs. 
C)  chloride channels open. 
D)  the membrane hyperpolarizes.

Question 11

Each neuron in the CNS may receive input from

Accepted Answer

A)  only one synaptic knob. 
B)  one synaptic knob at each end. 
C)  about 10 dendrites. 
D)  thousands of axons. 
A)  only one synaptic knob. 
B)  one synaptic knob at each end. 
C)  about 10 dendrites. 
D)  thousands of axons.

Question 12

Which cells produce myelin in the brain and spinal cord?

Accepted Answer

A)  Schwann cells 
B)  Astrocytes 
C)  Microglia 
D)  Oligodendrocytes 
A)  Schwann cells 
B)  Astrocytes 
C)  Microglia 
D)  Oligodendrocytes

Question 13

When an action potential passes over the surface of a synaptic knob, the contents of the vesicles are released in response to the presence of

Accepted Answer

A)  calcium ions. 
B)  sodium ions. 
C)  neurotransmitters. 
D)  neuropeptides. 
A)  calcium ions. 
B)  sodium ions. 
C)  neurotransmitters. 
D)  neuropeptides.

Question 14

_________ support the axon from within.

Accepted Answer

A)  Dendrites. 
B)  Nodes of Ranvier. 
C)  Neurofibrils. 
D)  Collaterals. 
A)  Dendrites. 
B)  Nodes of Ranvier. 
C)  Neurofibrils. 
D)  Collaterals.

Question 15

An impulse conducted along an axon consists of a wave of ______ ______ moving away from a point of stimulation.

Accepted Answer

The answer of An impulse conducted along an axon consists...

Question 16

The two types of cells of the nervous system are

Accepted Answer

A)  axons and dendrites. 
B)  neurons and neuroglia. 
C)  motor neurons and sensory neurons. 
D)  Schwann cells and microglia. 
A)  axons and dendrites. 
B)  neurons and neuroglia. 
C)  motor neurons and sensory neurons. 
D)  Schwann cells and microglia.

Question 17

Convergence refers to

Accepted Answer

A)  dendrites from neurons in different parts of the nervous system contacting the same neuron. 
B)  axons from neurons in different parts of the nervous system contacting the same neuron. 
C)  dendrites from the same neuron touching each other. 
D)  a neuroglial cell that contacts many neurons. 
A)  dendrites from neurons in different parts of the nervous system contacting the same neuron. 
B)  axons from neurons in different parts of the nervous system contacting the same neuron. 
C)  dendrites from the same neuron touching each other. 
D)  a neuroglial cell that contacts many neurons.

Question 18

Sheaths of ______ cells often enclose the larger axons outside of the brain and spinal cord.

Accepted Answer

The answer of Sheaths of ______ cells often enclose the...

Question 19

A drug that functions as an agonist

Accepted Answer

A)  activates a receptor, helping a neurotransmitter bind or triggering an action potential in some other way. 
B)  causes great pain if taken in too high a dose. 
C)  blocks a receptor so that the neurotransmitter cannot bind. 
D)  relieves pain. 
A)  activates a receptor, helping a neurotransmitter bind or triggering an action potential in some other way. 
B)  causes great pain if taken in too high a dose. 
C)  blocks a receptor so that the neurotransmitter cannot bind. 
D)  relieves pain.

Question 20

Synaptic knobs are at the ends of

Accepted Answer

A)  axons. 
B)  dendrites. 
C)  cell bodies. 
D)  neuroglia. 
A)  axons. 
B)  dendrites. 
C)  cell bodies. 
D)  neuroglia.

Exam 10: Nervous System I: Basic Structure and Function

Neural stem cells can be harvested from autopsies and stored, alive, in banks, whereas neurons cannot, because

A myelinated nerve fiber is ______, whereas an unmyelinated nerve fiber is ______.

Which of the following is(are) a type of neuroglia?

Neurons that conduct impulses from the CNS to muscles or glands are

Sensory receptors are part of the CNS.

Astrocytes structurally support neurons and also provide important signals and nutrients to neurons.

Clusters of neuron cell bodies in the PNS are called _____.

Viagra is a drug used to treat erectile dysfunction by dilating arteries in the penis. The neurotransmitter that Viagra affects is

Drugs that increase the actions of norepinephrine and/or serotonin by keeping them in synapses longer are most likely used to treat

An action potential is triggered if

Each neuron in the CNS may receive input from

Which cells produce myelin in the brain and spinal cord?

When an action potential passes over the surface of a synaptic knob, the contents of the vesicles are released in response to the presence of

_________ support the axon from within.

An impulse conducted along an axon consists of a wave of ______ ______ moving away from a point of stimulation.

The two types of cells of the nervous system are

Convergence refers to

Sheaths of ______ cells often enclose the larger axons outside of the brain and spinal cord.

A drug that functions as an agonist

Synaptic knobs are at the ends of

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Joints of the Skeletal System

Muscular System

Nervous System II: Division of the Nervous System

Nervous System III: Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestive System

Nutrition and Metabolism

Respiratory System

Urinary System

Water, Electrolyte, and Acid-Based Balance

Reproductive Systems

Pregnancy, Growth, and Development

Genetics and Genomics

Filters

A myelinated nerve fiber is , whereas an unmyelinated nerve fiber is .

An impulse conducted along an axon consists of a wave of moving away from a point of stimulation.