Maintaining Balance#

Question 1

How does the kidney help to maintain the balance?

Answer 1

Regulates the amount of water in the plasma
Maintains blood pressure and electrolyte balance using the angiotensin-aldosterone mechanism
Regulates the pH of the plasma

Question 2

State the stages in which the regulation of blood pressure and electrolytes occurs

Answer 2

1. A decrease in blood pressure occurs
2. Juxtaglomerular cells in kidney detect this
3. Produces Renin
4. Liver also produces angiotensinogen
5. This Causes an increase in angiotensin 1
6. Via lungs and increase of angiotensin 2 is also caused
7. This causes a vasoconstriction of arterioles, which will help increase blood pressure until it returns to normal.
8. Adrenal cortex causes an increase of aldosterone and then causes in kidneys, increased Na+ and water reabsorption and increased secretion of K+ and H+ into urine.
9. Causes increase in blood volume
10. Blood pressure increases until normal