Final Urinary/water intake/output Flashcards
Nephron
urine making unit of the kidney
Glomerulus
acts as strainer, lets water, sodium, chloride pass through to Bowmman’s Capsule, while RBCs and proteins stay in capillary
Glomerulus->
bowmans capsule->proximal convoluted tubule->descending/ascending loop of henle-> distal convoluted tubule->collecting duct->
Flow of fluid out efferent arteriole
efferent arteriole-> peritubular capillaries-> venules-> renal vein-> heart
Water balance- input has to equal
output; 2500 ml/day
Fluid intake from
60% fluid/drink, 30% food, 10% water from metabolism (breakdown of glucose=water&glucose)
Fluid excreted by
kidneys/urine (primary regulator adh [in] aldosterone [out], skin/lungs 28%, feces/sweat 12%
when water is low, ____ is secreted
ADH to conserve water by reabsorbing water from collecting duct
Sodium
chief extracellular cation 90% of cations in extracellular fluid
Hyper/hypo natremic
too much/little sodium in the blood-controlled by aldosterone secreted by adrenal cortex
Hypernatremic
lose water, not sodium high concentration of Na; diuretics- lose water through urine; diabetes- lose glucose in urine that takes water with it
Hyponatremic
^water intake vNa concentration
Potassium
chief intracellular cation; regulated by aldosterone- stimulates distal tubule of kidney to excrete potassium into urine
Hyperkalemic
malfunctioning kidneys unable to excrete K; excess Potassium in the blood
Hypokalemic
Prolonged use of Diuretics=loss of potassium; caused by vomiting/diarrhea
Calcium
regulated by vCalcitonin and parathyroid hormone^
Chloride
chief extracellular anion
Bicarbonate HCO3-
alkaline anion that removes excess acidity from the body; excreted by kidneys as the body needs it
pH of blood
acidosis 7.35-7.45 alkalosis
Metabolic caused alkalosis
vomiting of acid stomach contents -respiratory compensation of metabolic alkalosis-breathing slows = H+^
Respiratory caused alkalosis=
renal compensation of respiratory alkalosis-donate H+
Metabolic caused Acidosis
diarrhea=loss of alkaline bicarbonate/vomitting/->respiratory compensation of metabolic acidosis
Respiratory caused Acidosis
hypoventilation; emphysema, chest injury where it hurts to breathe; buffers accept H+; renal compensation of respiratory acidosis- excrete H+
Mechanisms to regulate acid/base balance
1) Buffers (accept/donate)
2) Respirations
3) Kidneys (excrete/absorb H+/HCO3-)