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KIDNEY'S ROLE IN HOMEOSTASIS, Angiotensin Converting Enzyme from Lungs…
KIDNEY'S ROLE IN HOMEOSTASIS
Regulation of BP
Decreased BP
Kidney secrete Renin
Angiotensin 1
Angiotensinogen from Liver
Angiotensin 2
Acts on Blood vessel
Increases peripheral resistance and increases BP
Stimulate adrenal cortex to release Aldosterone
Aldosterone increase Sodium reabsorption in Kidney
Increase Blood volume and increase BP
Stimulate Posterior PituItary gland to release ADH
Increase water reabsorption in kidney
Increase BP
Osmoregulation
Low water intake
Hyper Osmolarity
Osmoreceptors in the Hypothalamus
Posterior Pituitary gland
Increased ADH secretion
Kidney
Increased water reabsorption
Less water excreted in urine through negative feed back mechanism
Decresed water reabsorption
More water excreted in urine through negative Feed back mechanism
Decreased ADH secretion
Kidney
High water intake
Hypo Osmolarity
Acid Base Balance Regulation
High pH level(Alkalosis)
Increased H+ reabsorption
Decrease Bicarbonate Reabsorption and increases secretion
Low pH level(Acidosis)
Increase secretion of H+ions
Increase reabsorption of bicarbonate ions
Regulation of Erythropoiesis
Hypoxia
Produce Erythropoetin by Kidney
Stimulate Bone marrow to Produce RBC
Increase oxygen carrying capacity of the blood
Excretion of Waste Products
Glomerular Filtration :The movement of substance from the blood within the glomerulus into the capsular space.
Tubular Reabsorption: The movement of substance from the tubular fluid back in to the blood.
Tubular Secretion : The movement of substance from the blood in to the tubular fluid.
Excretion : Excretion of urine ,excess water and salts.
Angiotensin Converting Enzyme from Lungs