urinalysis general

Question 1

4 functions of the kidney

Answer 1

1. elimination of metabolic waster
2. maintain normal levels of electrolytes and essential organic molecules (homeostasis)
3. produce hormones
4. fluid regulation

Question 2

3 hormones the kidneys produce

Answer 2

1. erythropoietin
2. renin
3. active vitamin D3

Question 3

filtration of blood occurs at:

Answer 3

glomerulus

Question 4

glomerular filtration is driven by:

Answer 4

high blood pressure (osmosis and diffusion)

Question 5

glomerular filtration is permitted by:

this allows:

Answer 5

• semipermeable capillary membrane

- passage of water and dissolved solutes of low molecular weight

Question 6

urine is __% water and __% urea

Answer 6

• 95%

- 2%

Question 7

the majority of small molecules in the glomerular filtrate are _____ before they exit the body in urine

Answer 7

reabsorbed

Question 8

__% of filtered molecules are reabsorbed in the renal tubule

Answer 8

90%

Question 9

some molecules are _____ into the glomerular filtrate as it moves through the renal tubule

Answer 9

excreted