No abstract available
MeSH terms
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Adrenergic beta-Antagonists / pharmacology
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Adult
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Amyl Nitrite / pharmacology
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Atropine / pharmacology
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Autonomic Nervous System / drug effects*
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Blood Pressure / drug effects
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Heart Rate / drug effects
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Humans
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Isoproterenol / pharmacology
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Parasympathetic Nervous System / physiology
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Phenylephrine / pharmacology
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Physical Exertion*
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Posture
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Pressoreceptors / drug effects*
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Propranolol / pharmacology
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Pulse
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Reflex / drug effects*
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Rest
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Sinoatrial Node / innervation
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Sympathetic Nervous System / physiology
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Time Factors
Substances
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Adrenergic beta-Antagonists
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Phenylephrine
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Atropine
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Amyl Nitrite
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Propranolol
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Isoproterenol