CARDIOVASCULAR REGULATION

Seite 1

SYMPATHETIC - b1 receptors

PARAYMP- muscuranic recptrs- acetylcholine

CARDIAC INNERVATION

reason for vagal tone - kyunki release of acetylcholine further inhibits release of sympathetic ie adrenalin

PERIPHERAL BLOOD

MOSTLY SYMPATHETIC BUT PARASYMP IN ERECTILE TISUE SALIVARY GLANDS

BUT ALMOST ENTIRELY SYMP - due to differences in b1 nad b2 receptors vasoconstriction or vasodilation may be caused

ie vasodilation in humans is caused due to b2 receptors present and not due to cholinergic receptors prrresent on smooth muscle surface

this latent vasodilation of the symp only present/ active in stresss

axon reflex- jab zor se scratch karte ho to tab antidromic condn hota hai jiske vajah se substance p - vasodilation - sudden redness

BARORECPTORS

Baroreceptor setting - used for those people with chronic hypertensio - pop used around baroreceptor region -

innervation of barorecptor- vagus - glossopharyngeal -

baroreceptors are responsiblre for inherent vagal tonea as a result of whichj there is low bp... barireceptors constabtly send impulses

baroreceptors inn pulmonary region CANNOT DETECT SYSTEMIC ARTERIAL BOOOP but still manage to do htings as it is parallel reflexes...low pressur ereceptors- which is what oint 2 onn page 330 in akj is all abt .. ie in case the afferent nerves dont come then there is no point of cvc / vmc as they are regulated by baro and chemo and hence carry out ..

BUT THTA IS NOT THE CASE IN VMC WHERE IT IS INHERENTLY TONIC , CVC IS NOT DEPENDS UPON BARORECETPORS