p2 Kidneys

Question 1

What hormone controls water levels, where is it produced

Answer 1

ADH, pituitart gland in the brain

Question 2

what happens in body if water concentration is too high

Answer 2

-pituitary gland detects water levls are too high
-less ADH is produced
-so less water is reabsorbed into the blood by the kidney tubules (tubules are less permeable)
-so more urine is produced
-water concentration is restored to normal level

Question 3

what happens in body if water concentration is too low

Answer 3

-pituitary goand detecs thats water levels are too low
-more ADH is released
-more water is reabsorbed back into the blood by the kidney tubules (tubules are more permeable)
-little urine produced
-water concentration is restored to a normal level

Question 4

List some advantages of dialysis

Answer 4

-allows person with kidney failure to maintain their health
-no overall change in blood glucose levels

Question 5

List disadvantages of dialysis

Answer 5

-requires highly specialised and highly expensive machinery
-patient must be connected 2-3 times a week for 4-6 hours at a time
-mainly happens in hospital
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