Intermediate phase (the rennin-angiotensin vasoconstrictor mechanism 2shift of fluid through the tissue capillary walls in and out of the circulation to readjust the blood volume as needed 3stress-relaxation of the vasculature Delayed compliance Effect on the intravascular pressure oT injecting a small volume of blood into E500 a venous segment and a few minutes later removing extrablood intusion of blood the excess blood 2 demonstrating the principle of delayed compliance Minutes
Intermediate phase ①the rennin-angiotensin vasocontstrictor mechanism; ②shift of fluid through the tissue capillary walls in and out of the circulation to readjust the blood volume as needed. ③stress-relaxation of the vasculature; Effect on the intravascular pressure of injecting a small volume of blood into a venous segment and a few minutes later removing the excess blood, demonstrating the principle of delayed compliance
Long-term phase The renal-body fluid pressure control mechanism this mechanism can eventually return the arterial pressure all the way back, not merely partway back, to the pressure level that provides normal output of salt and water by the kidneys Days. Weeks and years kidneys
Long-term phase mechanism: this mechanism can eventually return the arterial pressure all the way back, not merely partway back, to the pressure level that provides normal output of salt and water by the kidneys The renal-body fluid pressure control ----kidneys ----------Days. Weeks and years
II. Knowledge involved in long-term pressure regulation
II. Knowledge involved in long-term pressure regulation
PIP2=Qr P2=0 2 P=QR Arterial blood pressure is the product of cardiac output and peripheral resistance Mean arterial blood pressure
P1 - P2 = QR P2 = 0 P= QR Arterial blood pressure is the product of cardiac output and peripheral resistance. Mean arterial blood pressure
V Arterial end Venous end +30 Capillary pressure +12 25 Plasma colloid osmotic pressure -25 +15-Colloid osmotic pressure of the+15 interstitial fluid pressure 10- Interstitial fluid pressure-10 8 Effect 10 Effect filltration filltration Capillary p ressure pressure Intersti fluid Lymphatic capilla
Lymphatic capillary Cell A V Capillary