Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
functions of the kidneys
|
1. reg blood volume, comp, & pressure (+/- H20)
2. electrolyte balance in blood (+/- minerals) 3. acid-base balance (hydrogen/bicarb) 4. electrolytes, acid base in tissue fluid 5. erythropoetin - make RBC |
|
|
kidneys blood flow
|
hilus entrance for renal artery, exit for renal vein, ureter
|
|
|
nephron
|
structural/functional unit of kidney
|
|
|
formation of urine
|
glomerular filtration
tubular reabsorption tubular secretion |
|
|
glomerular filtration
|
blood pressure forces plasma and dissolved materials out of capillaries
100-125 mL/min |
|
|
tubular reabsorption
|
recovery of useful materials, return to blood
1. active transport - glucose, amino acids, vitamins, +ions 2. passive transport - -ions 3. osmosis- reabsorb water following reabsorption of minerals 4. pinocytosis - proteins attach to membranes of tubule cells, engulfed, digested |
|
|
tubular secretion
|
substances actively secreted from blood into renal tubules
ammonia, creatinine. water soluble vitamines, metabolic products of meds |
|
|
level of substance in renal system
|
directly related to level in blood
|
|
|
kidneys and acid base balance
|
most responsible to maintain normal pH of blood and tissue fluid
|
|
|
too acidic body fluids
|
hydrogen to renal filtrate
bicarb to blood |
|
|
too alkaline body fluids
|
hydrogen to blood
bicarb to renal filtrate |
|
|
renin secretion
|
bp too low
results in angiotensin II = vasoconstriction = increased BP |
|
|
convert vitamin D
|
allows for absorption of calcium and phosphate
|
|
|
characteristics of urine
|
1000-2000 mL/day
straw/amber colored specific gravity of 1.010 to 1.025 (concentrating ability of kidneys) pH = 4.6-8 |
|
|
types of urinary incontinence
|
stress- increased abdominal pressure causes leakage
urge - abrupt/strong need to void functional - cannot reach toilet because of environmental barriers overflow - overdistension of bladder (spinal cord injuries) |
