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The major homeostatic control point for maintaining this stable balance is renal excretion. The kidney is directed to excrete or retain sodium via the action of aldosterone, antidiuretic hormone (ADH, or vasopressin), atrial natriuretic peptide (ANP), and other hormones.
All homeostatic control mechanisms have at least three interdependent components for the variable being regulated: a receptor, a control center, and an effector. [3] The receptor is the sensing component that monitors and responds to changes in the environment, either external or internal. Receptors include thermoreceptors and mechanoreceptors.
End-staged renal diseases as well as chronic kidney diseases increase the overall risk of individuals developing pneumonia due to the interactions between the kidneys and the lungs. [3] Both organs are targets of similar systematic diseases and loss of normal function of one organ can induce the disregulation of and abnormalities within the other.
The kidney participates in whole-body homeostasis, regulating acid–base balance, electrolyte concentrations, extracellular fluid volume, and blood pressure. The kidney accomplishes these homeostatic functions both independently and in concert with other organs, particularly those of the endocrine system .
The kidney's primary function is the elimination of waste from the bloodstream by production of urine. They perform several homeostatic functions such as:- Maintain volume of extracellular fluid; Maintain ionic balance in extracellular fluid; Maintain pH and osmotic concentration of the extracellular fluid.
The collecting duct system is the final component of the kidney to influence the body's electrolyte and fluid balance. In humans, the system accounts for 4–5% of the kidney's reabsorption of sodium and 5% of the kidney's reabsorption of water. At times of extreme dehydration, over 24% of the filtered water may be reabsorbed in the collecting ...