Question 1

Gliomas are tumors of glial cells. This type of cancer is difficult to treat, and the one-year survival rate is poor.

Accepted Answer

A) True 
 B)False

Question 2

Describe the myelin sheath.

Accepted Answer

Schwann cells in the PNS and oligodendro

Question 3

Less than 15% of all neurons are interneurons.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is not a characteristic of neurons?

Accepted Answer

A)  longevity 
B)  inability to divide 
C)  high metabolic rate 
D)  ability to survive without oxygen 
A)  longevity 
B)  inability to divide 
C)  high metabolic rate 
D)  ability to survive without oxygen

Question 5

The type of axon that conducts impulses most slowly is

Accepted Answer

A)  thick, myelinated. 
B)  thick, unmyelinated. 
C)  thin, myelinated. 
D)  thin, unmyelinated. 
A)  thick, myelinated. 
B)  thick, unmyelinated. 
C)  thin, myelinated. 
D)  thin, unmyelinated.

Question 6

These neurons reside only in the CNS and connect motor and sensory neurons.

Accepted Answer

interneuro

Question 7

Myelin on axons functions to

Accepted Answer

A)  make the axons live longer. 
B)  store nutrients (fat) for use by the neurons. 
C)  cover nodes of Ranvier. 
D)  speed the rate of impulse conduction and insulate neighboring axons from one another. 
A)  make the axons live longer. 
B)  store nutrients (fat) for use by the neurons. 
C)  cover nodes of Ranvier. 
D)  speed the rate of impulse conduction and insulate neighboring axons from one another.

Question 8

________ are the neuroglial cells with cilia.

Accepted Answer

The answer of ________ are the neuroglial cells with cilia....

Question 9

Motor neurons arise primarily from the

Accepted Answer

A)  alar plate. 
B)  basal plate. 
C)  ependyma. 
D)  neural crest. 
A)  alar plate. 
B)  basal plate. 
C)  ependyma. 
D)  neural crest.

Question 10

Distinguish monosynaptic reflexes from polysynaptic reflexes.

Accepted Answer

Monosynaptic reflexes involve a single s

Question 11

Nearly all somatic sensory neurons are of this type, based on the classification of the type and number of processes.

Accepted Answer

The answer of Nearly all somatic sensory neurons are of...

Question 12

Figure 12.2
Use the diagrams above to answer the following questions.
-Identify which diagram represents a microglial cell.

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 13

A(n) ________ is a medical specialist in the study of the nervous system and its disorders.

Accepted Answer

The answer of A(n) ________ is a medical specialist in...

Question 14

This region of the neuron contains a single nucleus surrounded by cytoplasm.

Accepted Answer

A)  synapse 
B)  axon terminal 
C)  axon 
D)  cell body 
E)  dendrite 
A)  synapse 
B)  axon terminal 
C)  axon 
D)  cell body 
E)  dendrite

Question 15

Mitochondria are particularly abundant here.

Accepted Answer

A)  synapse 
B)  axon terminal 
C)  axon 
D)  cell body 
E)  dendrite 
A)  synapse 
B)  axon terminal 
C)  axon 
D)  cell body 
E)  dendrite

Question 16

These glial cells arise from embryonic white blood cells.

Accepted Answer

A)  ependymal cells 
B)  microglia 
C)  oligodendrocytes 
D)  satellite cells 
A)  ependymal cells 
B)  microglia 
C)  oligodendrocytes 
D)  satellite cells

Question 17

Describe the levels of layers of myelin and connective tissue surrounding a nerve.

Accepted Answer

The axon is myelinated by Schwann cells,

Question 18

The difference between myelinated and unmyelinated axons is that

Accepted Answer

A)  Schwann cells are not associated with unmyelinated axons. 
B)  Schwann cells form more widely spaced nodes of Ranvier in unmyelinated axons. 
C)  Schwann cells simultaneously surround multiple axons in myelinated axons. 
D)  Schwann cells wrap around myelinated axons in concentric layers. 
A)  Schwann cells are not associated with unmyelinated axons. 
B)  Schwann cells form more widely spaced nodes of Ranvier in unmyelinated axons. 
C)  Schwann cells simultaneously surround multiple axons in myelinated axons. 
D)  Schwann cells wrap around myelinated axons in concentric layers.

Question 19

This is the site of communication between neurons.

Accepted Answer

A)  synapse 
B)  axon terminal 
C)  axon 
D)  cell body 
E)  dendrite 
A)  synapse 
B)  axon terminal 
C)  axon 
D)  cell body 
E)  dendrite

Question 20

Neurofibrils

Accepted Answer

A)  form synapses with axons of postsynaptic neurons. 
B)  help circulate cerebrospinal fluid. 
C)  prevent the neuron from being pulled apart when subjected to tensile forces. 
D)  receive incoming stimuli and pass the signal toward the cell body. 
A)  form synapses with axons of postsynaptic neurons. 
B)  help circulate cerebrospinal fluid. 
C)  prevent the neuron from being pulled apart when subjected to tensile forces. 
D)  receive incoming stimuli and pass the signal toward the cell body.

Exam 12: Fundamentals of the Nervous System and Nervous Tissue

Gliomas are tumors of glial cells. This type of cancer is difficult to treat, and the one-year survival rate is poor.

Describe the myelin sheath.

Less than 15% of all neurons are interneurons.

Which of the following is not a characteristic of neurons?

The type of axon that conducts impulses most slowly is

These neurons reside only in the CNS and connect motor and sensory neurons.

Myelin on axons functions to

________ are the neuroglial cells with cilia.

Motor neurons arise primarily from the

Distinguish monosynaptic reflexes from polysynaptic reflexes.

Nearly all somatic sensory neurons are of this type, based on the classification of the type and number of processes.

Figure 12.2 Use the diagrams above to answer the following questions. -Identify which diagram represents a microglial cell.

A(n) ________ is a medical specialist in the study of the nervous system and its disorders.

This region of the neuron contains a single nucleus surrounded by cytoplasm.

Mitochondria are particularly abundant here.

These glial cells arise from embryonic white blood cells.

Describe the levels of layers of myelin and connective tissue surrounding a nerve.

The difference between myelinated and unmyelinated axons is that

This is the site of communication between neurons.

Neurofibrils

The Human Body: an Orientation

The Living Units

Basic Embryology

Tissues

The Integumentary System

Bones and Skeletal Tissues

Bones, Part 1: The Axial Skeleton

Bones, Part 2: The Appendicular Skeleton

Joints

Skeletal Muscle Tissue

Muscles of the Body

The Central Nervous System

The Peripheral Nervous System

The Autonomic Nervous System and Visceral Sensory Neurons

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels

The Lymphatic and Immune Systems

The Respiratory System

The Digestive System

The Urinary System

The Reproductive System

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