Urinary System Function, Assessment, and Therapeutic Measures

Question 1

Kidney

Answer 1

• Located just below the diaphragm on each side of vertebral column
• Dark, red bean shaped
• 4-5 inches long and 2-3 inches wide and 1 inch thick

Question 2

Normal urine output is …?

Answer 2

1500 mL/day

Question 3

Major functions of the kidney

Answer 3

• Urine formation (glomerular filtration & tubular re-absoprtion; 1000-1200 mL/day)
• F&E control (by excretion, secretion, and re-absorption)
• Acid-base balance (mainitain pH of 7.35-7.45 by excreting H+ ions and forming bicarb)
• Blood pressure regulation (controls circulating volume and renin secretion)
• RBC production (secretes erythropoietin)
• Regulation of calcium-phosphorous metabolism (regulates activation of vitamin D)

Question 4

About how much water is lost in respirations?

Answer 4

300 mLs

Question 5

About how much water is lost in bowels?

Answer 5

200 mL

Question 6

About how much water is lost in urine?

Answer 6

1500 mL

Question 7

Renal corpsucle

Answer 7

• Tuff of capillaries between the afferent and efferent arterioles
• Each tuff is enclosed within Bowman’s capsule

Question 8

Glomerulus function

Answer 8

Selevtive filtration

Question 9

Proximal tubule function

Answer 9

80% absorption of electrolytes and H2O, reabsorption of glucose, amino acids, K+, bicarbonate, Cl, Ca+, and HCO3

Question 10

Loop of Henle function

Answer 10

• Reabsorption of Na+, Cl, H2O

- Dilution or concentration of urine

Question 11

Distal tubule functions

Answer 11

-Where ADH works to hold onto H20

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