Question 1

Acetylcholine is in the same class of neurotransmitters as:

Accepted Answer

A)  serotonin. 
B)  histamine. 
C)  dopamine. 
D)  none of the above. 
A)  serotonin. 
B)  histamine. 
C)  dopamine. 
D)  none of the above.

Question 2

Within the nervous system,coding for the strength of a stimulus is accomplished through:

Accepted Answer

A)  changes in the magnitude of the action potential. 
B)  changes in the length or duration of the action potential. 
C)  the frequency of nerve impulses. 
D)  an increase in the number of opening sodium channels. 
A)  changes in the magnitude of the action potential. 
B)  changes in the length or duration of the action potential. 
C)  the frequency of nerve impulses. 
D)  an increase in the number of opening sodium channels.

Question 3

What is the major function of neurons?

Accepted Answer

A: The major function of neurons, which

Question 4

Serotonin is an example of a(n):

Accepted Answer

A)  amino acid neurotransmitter. 
B)  amine neurotransmitter. 
C)  acetylcholine derivative. 
D)  neuropeptide neurotransmitter. 
A)  amino acid neurotransmitter. 
B)  amine neurotransmitter. 
C)  acetylcholine derivative. 
D)  neuropeptide neurotransmitter.

Question 5

A slight shift away from the resting membrane potential in a specific region of the plasma membrane is called a _____ potential.

Accepted Answer

A)  membrane 
B)  resting membrane 
C)  local 
D)  None of the above are correct. 
A)  membrane 
B)  resting membrane 
C)  local 
D)  None of the above are correct.

Question 6

Which is true of a reflex arc?

Accepted Answer

A)  It does not involve the brain. 
B)  It always consists of an afferent neuron and an efferent neuron. 
C)  It always consists of an afferent neuron, an efferent neuron, and an interneuron. 
D)  It always consists of an afferent neuron, an efferent neuron, the brain, and the spinal cord. 
A)  It does not involve the brain. 
B)  It always consists of an afferent neuron and an efferent neuron. 
C)  It always consists of an afferent neuron, an efferent neuron, and an interneuron. 
D)  It always consists of an afferent neuron, an efferent neuron, the brain, and the spinal cord.

Question 7

Schwann cells have a function in the peripheral nervous system that is similar to that of which cells in the central nervous system?

Accepted Answer

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

Question 8

Explain the ways in which the activity of the neurotransmitter is stopped at the postsynaptic receptor.

Accepted Answer

The activity of a neurotransmitter at th

Question 9

A neuron that transmits a nerve impulse toward the central nervous system is called a(n):

Accepted Answer

A)  motor neuron. 
B)  sensory neuron. 
C)  interneuron. 
D)  bipolar neuron. 
A)  motor neuron. 
B)  sensory neuron. 
C)  interneuron. 
D)  bipolar neuron.

Question 10

Stimulus-gated channels open in response to:

Accepted Answer

A)  sensory stimuli. 
B)  the influx of potassium. 
C)  hyperpolarization. 
D)  both A and B. 
A)  sensory stimuli. 
B)  the influx of potassium. 
C)  hyperpolarization. 
D)  both A and B.

Question 11

Interneurons reside in the:

Accepted Answer

A)  CNS and peripheral nervous system. 
B)  CNS only. 
C)  peripheral nervous system only. 
D)  None of the above are correct. 
A)  CNS and peripheral nervous system. 
B)  CNS only. 
C)  peripheral nervous system only. 
D)  None of the above are correct.

Question 12

Match each of the following cell types with its corresponding description.
-help form the blood-brain barrier

Accepted Answer

A) Astrocyte 
B) Oligodendrocyte 
C) Microglia 
D) Schwann cell 
E) Ependymal cells 
A) Astrocyte 
B) Oligodendrocyte 
C) Microglia 
D) Schwann cell 
E) Ependymal cells

Question 13

Which of the following is true of spatial summation?

Accepted Answer

A)  Simultaneous stimulation of more than one postsynaptic neuron occurs. 
B)  Impulses are fired in a rapid succession by the same neuron. 
C)  Neurotransmitters released simultaneously from several presynaptic knobs converge on one postsynaptic neuron. 
D)  Speed of impulse transmission is increased when several neurotransmitters are released. 
A)  Simultaneous stimulation of more than one postsynaptic neuron occurs. 
B)  Impulses are fired in a rapid succession by the same neuron. 
C)  Neurotransmitters released simultaneously from several presynaptic knobs converge on one postsynaptic neuron. 
D)  Speed of impulse transmission is increased when several neurotransmitters are released.

Question 14

Explain both temporal and spatial summation.

Accepted Answer

Temporal summation refers to the process

Question 15

What is the relationship between the afferent and efferent neurons of the reflex arc?

Accepted Answer

A)  The afferent neurons move signals to the central nervous system and the efferent neurons move signals away from the central nervous system. 
B)  The afferent neurons move signals away from the central nervous system and the efferent neurons move signals to the central nervous system. 
C)  Afferent neurons are present in the brain and efferent neurons are present at the sensory site. 
D)  None. Efferent neurons are only present in gray matter of the brain and are needed for the reflex arc to work correctly. 
A)  The afferent neurons move signals to the central nervous system and the efferent neurons move signals away from the central nervous system. 
B)  The afferent neurons move signals away from the central nervous system and the efferent neurons move signals to the central nervous system. 
C)  Afferent neurons are present in the brain and efferent neurons are present at the sensory site. 
D)  None. Efferent neurons are only present in gray matter of the brain and are needed for the reflex arc to work correctly.

Question 16

No impulse can be sent through a neuron:

Accepted Answer

A)  during the relative refractory period. 
B)  when the charge of the neuron is -70. 
C)  during the absolute refractory period. 
D)  when the stimulus is too strong. 
A)  during the relative refractory period. 
B)  when the charge of the neuron is -70. 
C)  during the absolute refractory period. 
D)  when the stimulus is too strong.

Question 17

Match each of the following cell types with its corresponding description.
-resemble epithelial cells and line fluid-filled cavities in the brain and spinal cord

Accepted Answer

A) Astrocyte 
B) Oligodendrocyte 
C) Microglia 
D) Schwann cell 
E) Ependymal cells 
A) Astrocyte 
B) Oligodendrocyte 
C) Microglia 
D) Schwann cell 
E) Ependymal cells

Question 18

Match each part of the nervous system with its corresponding description.
-PNS subdivision that transmits incoming information from the sensory organs to CNS

Accepted Answer

A) Afferent division 
B) Autonomic nervous system 
C) Central nervous system 
D) Efferent division 
E) Parasympathetic division
F)Peripheral nervous system
G)Somatic nervous system
H)Sympathetic division 
A) Afferent division 
B) Autonomic nervous system 
C) Central nervous system 
D) Efferent division 
E) Parasympathetic division
F)Peripheral nervous system
G)Somatic nervous system
H)Sympathetic division

Question 19

The telodendria are:

Accepted Answer

A)  the receptor portion of the dendrite. 
B)  where the dendrite attaches to the cell body. 
C)  where the axon leaves the cell body. 
D)  none of the above. 
A)  the receptor portion of the dendrite. 
B)  where the dendrite attaches to the cell body. 
C)  where the axon leaves the cell body. 
D)  none of the above.

Question 20

The white matter of the nervous system is made up of:

Accepted Answer

A)  myelinated fibers. 
B)  nuclei. 
C)  unmyelinated fibers. 
D)  ganglia. 
A)  myelinated fibers. 
B)  nuclei. 
C)  unmyelinated fibers. 
D)  ganglia.

Exam 13: B: Nervous System Cells

Acetylcholine is in the same class of neurotransmitters as:

Within the nervous system,coding for the strength of a stimulus is accomplished through:

What is the major function of neurons?

Serotonin is an example of a(n):

A slight shift away from the resting membrane potential in a specific region of the plasma membrane is called a _____ potential.

Which is true of a reflex arc?

Schwann cells have a function in the peripheral nervous system that is similar to that of which cells in the central nervous system?

Explain the ways in which the activity of the neurotransmitter is stopped at the postsynaptic receptor.

A neuron that transmits a nerve impulse toward the central nervous system is called a(n):

Stimulus-gated channels open in response to:

Interneurons reside in the:

Match each of the following cell types with its corresponding description. -help form the blood-brain barrier

Which of the following is true of spatial summation?

Explain both temporal and spatial summation.

What is the relationship between the afferent and efferent neurons of the reflex arc?

No impulse can be sent through a neuron:

Match each of the following cell types with its corresponding description. -resemble epithelial cells and line fluid-filled cavities in the brain and spinal cord

Match each part of the nervous system with its corresponding description. -PNS subdivision that transmits incoming information from the sensory organs to CNS

The telodendria are:

The white matter of the nervous system is made up of:

A: Organization of the Body

B: Organization of the Body

A: The Chemical Basis of Life

B: The Chemical Basis of Life

A: Anatomy of Cells

B: Anatomy of Cells

Physiology of Cells

Cell Growth and Reproduction

Tissues

A: Skin and Its Appendages

B: Skin and Its Appendages

A: Skeletal Tissues

B: Skeletal Tissues

Skeletal System

A: Articulations

B: Articulations

A: Anatomy of the Muscular System

B: Anatomy of the Muscular System

A: Physiology of the Muscular System

B: Physiology of the Muscular System

A: Nervous System Cells

A: Central Nervous System

B: Central Nervous System

Peripheral Nervous System

Autonomic Nervous System

A: Sense Organs

B: Sense Organs

Endocrine System

Endocrine Glands

Blood

Anatomy of the Cardiovascular System

A: Physiology of the Cardiovascular System

B: Physiology of the Cardiovascular System

Lymphatic System

A: Immune System

B: Immune System

Stress

Anatomy of the Respiratory System

A: Physiology of the Respiratory System

B: Physiology of the Respiratory System

A: Anatomy of the Digestive System

B: Anatomy of the Digestive System

A: Physiology of the Digestive System

B: Physiology of the Digestive System

A: Nutrition and Metabolism

B: Nutrition and Metabolism

A: Urinary System

B: Urinary System

Fluid and Electrolyte Balance

Acid-Base Balance

Male Reproductive System

A: Female Reproductive System

B: Female Reproductive System

A: Growth and Development

B: Growth and Development

A: Genetics and Heredity

B: Genetics and Heredity

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