Autonomic Nervous System (ANS)
Autonomic Nervous System (ANS)
Autonomic Nervous System (ANS)
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Action of Nor adrenaline (NA)<br />
C.V.S :<br />
NA increase PR due to intensive vasoconstriction<br />
of most vascular bed<br />
( including kidney via α 1R), which lead to increase<br />
both S & D Bdp<br />
(with increase mean Bdp). This lead to<br />
compensatory vagal reflex by stimulation to the<br />
baroreceptor reflex , which cause decrease<br />
contraction of heart & decrease HR ( called reflex<br />
bradycardia).
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