Kidneys

Question 1

What do Kidneys do

Answer 1

Make urine by taking waste products out of blood

Question 2

How does kidneys work

Answer 2

Substances are filtered out of blood as passes thru the kidneys - filtration
Useful substances like glucose, some ions, right amount of water absorbed back to blood - selective reabsorption

Question 3

How Is Urea removed in urine

Answer 3

-Urea-proteins cant be stored in body do excess amino acids converted to fats+carbohydrates that can be stored-happens in liver called deamination
-Ammonia produced as wasted from process
-ammonia toxic and converted to urea and filtered out

Question 4

How is ions removed in Urine

Answer 4

-irons like sodium taken into body in food and absorbed into blood
-if iron content is wrong, it can upset balance of between ions and water-too much or little water drawn my osmosis
-some ions lost in sweat-not regulated
-right amount of ions reabsorbed into blood ans rest is removed

Question 5

How is water removed in urine

Answer 5

-body constantly balances water in and out of body
-lose through sweat and lungs breathing
-cant control how much we lose this way so right amount is absorbed into blood and rest removed

Question 6

What is the hormone that controls concentration of urine

Answer 6

Anti-diuretic hormone (ADH)- in blood stream by pituitary gland

Question 7

How does ADH release

Answer 7

Brain monitors water content and instructs pituitary gland to release ADH
according to how much needed