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Mean Arterial Pressure Control Animation

📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:-   / drgbhanuprakash   📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- https://t.me/bhanuprakashdr 📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- https://linktr.ee/DrGBhanuprakash Mean Arterial Pressure Control Animation 2 mechanisms exist to monitor and regulate changes in MAP (mean arterial pressure): 1) Baroreceptor reflex—more important for short-term control of blood pressure Arterial baroreceptors in the carotid sinus sense and respond to acute increases or decreases in arterial pressures Arterial baroreceptors in the aortic arch respond to acute increases, but not decreases in arterial pressure. 2) RAA (renin-angiotensin-aldosterone) system—more important for long-term control of blood pressure. For example, how would the body respond to an acute hypotensive episode? 1) Baroreceptor reflex responds within seconds: Acute ↓ in MAP →↓ afferent signals sent from the carotid sinus baroreceptors via glossopharyngeal nerve (CN IX) to the brain stem medulla →↓ in parasympathetic activity via the efferent vagus nerve to the heart, with a simultaneous ↑ in sympathetic outflow from the nucleus of the solitary tract to the heart and vasculature → ↑ Heart rate (chronotropic effect) ↑Myocardial contractility (inotropic effect) ∴↑ stroke volume ↑ AV conduction velocity (dromotropic effect) ↑ TPR (total peripheral resistance) ∴compensatory↑ of mean arterial pressure toward normal Recall: MAP = CO*TPR, and CO = HR * SV CO=cardiac output, HR=heart rate, SV=stroke volume 2) RAA (renin-angiotensin-aldosterone) system senses the acute drop in blood pressure but takes minutes-hours-days to kick into gear: ↓ MAP →↓ renal blood flow is sensed by the juxtaglomerular apparatus →↑ renin →↑ angiotensin II → Angiotensin II is a potent vasoconstrictor that increases total peripheral resistance. Angiotensin II also stimulates the release of aldosterone → stimulates renal sodium retention and subsequent renal fluid reabsorption to help maintain total blood volume in an attempt to preserve stroke volume, cardiac output, and mean arterial pressure. #mreanarterialpressurecontrol #meanarterialpressure #meanarterialbloodpressure #physiology #cvsphysiology #cvs #cardiovascularphysiology #meanarterialpressureanimation #meanarterialpressurecontrolanimation