Immunoglobulins, formed of five subunits, that are the first antibodies to be produced in response to infection, are
A) IgA.
B) IgD.
C) IgE.
D) IgG.
E) IgM.
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Question 2) In the corticospinal pathway, the neuron that exits the spinal cord and enters the spinal nerve is called the ________ neuron.
A) upper sensory
B) lower sensory
C) upper motor
D) lower motor
E) pyramidal
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Question 3) Immunoglobulins that are found on the surface of B cells and that may activate antibody production are
A) IgA.
B) IgD.
C) IgE.
D) IgG.
E) IgM.
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Question 4) Descending tracts in the spinal cord relay ________ information.
A) sensory
B) motor
C) sensory and motor
D) only somatic
E) autonomic
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Question 5) Immunoglobulins that attach to and sensitize mast cells and basophils are
A) IgA.
B) IgD.
C) IgE.
D) IgG.
E) IgM.
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Question 6) Damage to the tectospinal tracts would interfere with the ability to
A) position the arms.
B) monitor body position.
C) make reflex responses of the head and neck in response to sudden movements or loud noises.
D) control motor units located in the leg.
E) coordinate eating and swallowing movements.
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Question 7) Immunoglobulins that are most abundant and are responsible for resistance against many viruses, bacteria, and bacterial toxins are
A) IgA.
B) IgD.
C) IgE.
D) IgG.
E) IgM.
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Question 8) Upper motor neurons are located in the
A) precentral gyrus.
B) postcentral gyrus.
C) brain stem.
D) spinal cord.
E) cerebral hemispheres and the brain stem.
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Question 9) The various classes of immunoglobulins are differentiated on the basis of their
A) asymmetry.
B) antigen specificity.
C) light-chain variable segments.
D) heavy-chain constant segments.
E) reactivity.
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Question 10) Motor neurons whose cell bodies are within the spinal cord are called ________ neurons.
A) upper motor
B) lower motor
C) preganglionic
D) postganglionic
E) somesthetic
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