Final Urinary/water intake/output Flashcards
(24 cards)
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-)