1C. The Urinary System's Maintenance of Water-Salt Balance

Question 1

the kidney maintains ___ and ___ balance

Answer 1

water, salt

Question 2

___ or ___ by the urinary system happens to keep blood volume relatively constant

Answer 2

excretion, reabsorption

Question 3

normal blood pH

Answer 3

7.4

Question 4

TRUE OR FALSE: regulating nutrients to be absorbed is a function of this system

Answer 4

false (not a function)

Question 5

kidney filters blood continuously by distributing the blood that comes into the kidney to millions of tiny functional units called ___

Answer 5

nephrons

Question 6

when originally filtered from the blood, the fluids in the nephrons has the same ___ ratio as the blood

Answer 6

water-to-solute

Question 7

result when the fluid reaching the collecting duct, then, becomes far less concentrated than blood plasma

Answer 7

dilute urine

Question 8

plays a vital role in maintaining the body’s fluid balance through a negative feedback system

Answer 8

antidiuretic hormone (ADH)

Question 9

the antidiuretic hormone (ADH) is also known as ___

Answer 9

vasopressin

Question 10

why is salt intake important?

Answer 10

• sodium chloride helps manage osmotic balance
• research suggests moderate sodium consumption.
• hyponatremia

Question 11

the body pH range must be maintained between ___

Answer 11

7.35 and 7.45

Question 12

this system plays a role through the bicarbonate buffer system

Answer 12

respiratory system

Question 13

TRUE OR FALSE: breathing rate is affected by acidity and basicity in the blood

Answer 13

true

Question 14

regulates blood pH through filtration of bicarbonate

Answer 14

kidneys

Question 15

urine pH varies between ___

Answer 15

4.6 and 8.0