The Kidneys and Homeostasis

Question 1

What three things do the kidneys do?

Answer 1

1) removal of urea from the blood
2) adjustment of ions in the blood
3) adjustment of water content of the blood

Question 2

How do the kidneys remove urea?

Answer 2

The kidneys filter it out of the blood stream, and then it is temporarily stored in the bladder as urine.

Question 3

What happens if the ion content is wrong?

Answer 3

Disrupts the balance between ions and water, meaning too much or too little water is drawn into cells by osmosis, which could damage the cells.

Question 4

How is water lost? (3 points)

Answer 4

1) in urine
2) in sweat
3) in the air we breathe out

Question 5

How is water content balanced? (3 points)

Answer 5

1) liquids consumed
2) amount sweated out
3) amount exerted by the kidneys in the urine