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signal processing
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ADH and RAAS System
7/5/12
Role of ADH Hormone (Vasopressin) •
• If the salinity over the range of normal and less water in the body, the blood osmoticpressure will increase, • osmoreceptors in the hypothalamus and an d pituitary gland will be stimulated more activelystimulated to secrete antidiuretic anti diuretic hormone ADH is to increase the permeability of the renaltubules to water, • adrenal gland (hormone aldosterone) will not be stimulated, then more water is absorbedand less sodium ions i ons and calcium ions to be reabsorbed into the body, • blood osmotic pressure will drop, this process will be repeated so that the osmoticpressure of blood in the normal
7/5/12
The Role Role of RA RAAS System
7/5/12
Mechanism of RAAS system Mechanism of RAAS system can be started cause of 3 processed : •
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Decrease Decrease in blood volume causes a decrease in blood pressure in the glomerulus Juxtaglomerular cell stimulation by the sympathetic nervous decrease decrease in osmotic concentration of tubular fluid in the macula densa.
7/5/12
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Process can stimulate cells in the kidney jukstaglomerular to release the enzyme renin, Renin then it will circulate throughout the body which will then meet with the angiotensinogen produced in the liver to release the enzyme angiotensin I. Angiotensin I into angiotensin II will 7/5/12 change after Angiotensin Converting
Angiotensin II will lead to several effects, namely : •
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increased arterial pressure reduce the excretion of salt and extra water to increase the volume of cells stimulates the secretion of aldosterone in the adrenal gland which in turn increases salt and water reabsorption by the renal
7/5/12
Excretion Excretion on on animal Excretion tool
Animal
Malpighian tubules (uric acid)
Insecta
Flame cell
Flat worm
Annelida Annelida and moluska moluska Metane Metanefrid fridium ium