Which of the following statements about the sympathetic nervous system is true? a. stimulation of the sympathetic nervous system generally causes a decrease in blood pressure. b. the only neurotransmitters it secretes are epinephrine and norepinephrine. c. there are three different subtypes of sympathetic nervous system receptors on target organs. d. the nerves exit the central nervous system in the head and from the lumbar spine.
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Which of the following statements about the sympathetic nervous system is true? a. stimulation of t...
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