Andrenergics/Adrenergic Blockers Flashcards
What does ANS regulate?
BP, HR, RR, body temp, water balance, urinary excretion, digestive functions
What does SNS regulate?
Sweating, influences metabolism and renal function
Alpha Blockers mech of action:
Lower blood pressure by blocking the effects of the sympathetic nervous system on blood vessels, causing them to relax and dilate, thus reducing resistance to blood flow
Alpha blockers medication effects:
Causes both arterial and venous dilation, reducing peripheral vascular resistance and BP, constriction of the pupils, increased GI tract motility
Alpha blockers indications:
HTN
Dig immune fab:
Very toxic, only for life-threatening s/s, last resort otherwise HCP will hold medication
Alpha 1:
located on postsynaptic effector cells
-cell,muscle, or organ that the nerve stimulates
Alpha-2:
located on presynaptic nerve terminals
-nerve that stimulates the effector cells
-control the release of neurotransmitters
Alpha-Adrenergic Agonist responses:
-vasocontsriction
-CNS Stimulation
Beta 1:
located on heart
beta 2:
located on the smooth muscle of bronchioles, arterioles, visceral organs
(LUNGS)
Beta-Adrenergic Agonist Responses:
-Bronchial, gastrointestinal, and uterine smooth muscle relaxation
-glycogenolysis
-cardiac stimulation