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The kidneys secrete a variety of hormones, including erythropoietin, calcitriol, and renin. Erythropoietin is released in response to hypoxia (low levels of oxygen at tissue level) in the renal circulation. It stimulates erythropoiesis (production of red blood cells) in the bone marrow.
Na + loss approximately correlates with fluid loss from ECF, since Na + has a much higher concentration in ECF than ICF. In contrast, K + has a much higher concentration in ICF than ECF, and therefore its loss rather correlates with fluid loss from ICF, since K + loss from ECF causes the K + in ICF to diffuse out of the cells, dragging water with it by osmosis.
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 ...
The kidney has many functions, which a well-functioning kidney realizes by filtering blood in a process known as glomerular filtration. A major measure of kidney function is the glomerular filtration rate (GFR). The glomerular filtration rate is the flow rate of filtered fluid through the kidney.
Kidney and nerve tissue cells can form memories much like brain cells, one new study has found. ... on a gene associated with memory storage. This suggests that, like brain cells, other cells in ...
When fluid moves out of the intravascular compartment (the blood vessels), blood pressure can drop to dangerously low levels, endangering critical organs such as the brain, heart and kidneys; when it shifts out of the cells (the intracellular compartment), cellular processes slow down or cease from intracellular dehydration; when excessive ...
Dehydration happens when you lose so many fluids that your body can’t function normally. Drinking water and staying hydrated keeps that from happening and helps maintain normal blood pressure ...
Kidneys are important for regulating blood pressure and filtering waste products from the bloodstream; managing urine excretion to prevent dehydration; and regulating levels of electrolytes and ...