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Kidney's Role in Homeostasis biobook_animdig_graphik_14 (Metabolic…
Kidney's Role in Homeostasis
Metabolic wastes removal
Filtration (
Glumerulus
filters blood and produces filtrate
water
Glucose
Bicarbonate
Potassium (electrolyte)
Sodium, chloride (electrolytes)
Amino acids
Proximal Tubule
:Most re-absorption and secretion happen and Acid-base balance begins
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Creatinine and urea
Blood pressure regulation
↓
Blood pressure
Renin-Angiotensin- Aldosterone System
Renin secretion (kidney)
Angiotensin I converted to Angiotensin II (through Angiotensin converting enzyme)
Aldosterone (Adrenal Cortex)
↑ Sodium reabsorption
↑ Water reabsorption
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Anti-diuretic hormone (Pituitary Gland)
Water is permeable in collecting tubule and medullary collecting duct
Water is reabsorbed
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Arteriolar Vasoconstriction
Reabsorbption and secretion minerals
Electrolyte balance
Acid-base balance
Regulation of body fluid and osmolality
