Bipolar disorders
A. involve both mania and depression.
B. are most effectively treated with drugs that increase availability of dopamine.
C. are an exaggeration of normal changes in mood.
D. both "involve both mania and depression" and "are most effectively treated with drugs that increase availability of dopamine" are correct.
E. both "involve both mania and depression" and "are an exaggeration of normal changes in mood" are correct.
E
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A contractile response of a single muscle fiber to a single muscle impulse is called a:
A. tetanus B. tone C. treppe D. twitch E. paralysis
Where are unmyelinated nerve fibers surrounded by Schwann cells?
A. In the PNS B. In the PNS and CNS C. In the CNS D. Nowhere. Unmyelinated nerve fibers are never surrounded by Schwann cells.
Which structure is lined with simple squamous epithelium?
A) oropharynx B) alveolus C) trachea D) nasopharynx
The inspiratory muscles include the
a. diaphragm and internal intercostal muscles. b. diaphragm and external intercostal muscles. c. diaphragm and abdominal muscles. d. internal and external intercostal muscles. e. none of these answers.