neuro part 1 ANS.txt

Autonomic nervous system
- controls involuntary actions or involuntary muscles such as smooth and cardiac muscle
- hypothalamus (center for homeostasis) controls certain activities of the ANS
- houses both sympathetic and parasympathetic nervous systems
Hypothalamus controls:
- arterial blood pressure
- heart rate
- respiration
- sweating
- gastrointestinal function
- temperature regulation
Sympathetic nervous system
- controls activities that increase energy output
- major neurotransmitter = norephinephrine
Drugs that mimic effects of norephinephrine
- adrenergic receptor agonists
- sympathomimetics
Drugs that block the action of norepinephrine
- adrenergic receptor antagonists
- sympatholytics
Adrenergic receptors
- alpha 1, alpha 2
- beta 1, beta 2
alpha 1 receptor and physiological responses

increases force of cardiac contraction
alpha 2 receptor and physiological responses

inhibits norepinephrine release
beta 1 receptor and physiological responses

increases heart rate and force of contraction
beta 2 receptor and physiological responses

dilates bronchioles

Author

mhunger

178647

Card Set

neuro part 1 ANS.txt

Description

neurology physiology and ANS, includes only the first physiological response for adrenergic receptors

Updated

2012-10-21T01:59:16Z

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