Reabsorbtion Of Salts And Blood Pressure

Question 1

Aldosterone

Answer 1

Stimulates the collecting ducts and distal tubule’s to re-absorb in Na ions and stimulate the secretion of K+ into the distal tubule and collecting ducts if K+ ion concentration in the blood is too high

• produced in adrenal gland

-ALDOSTERONE HAS A NET AFFECT OF RETAINING BOTH SALT AND WATER

Question 2

Juxtaglomerulus apparatus

Answer 2

-Found near glomerulus
- contains blood pressure receptors which detect low blood pressure
-release renin

Question 3

Renin

Answer 3

Enzyme which converts angiotensinogen to angiotensin

-angiotensin Causes constriction of the blood vessels which increase blood pressure and initiates the release of aldosterone which causes the fluid levels to increase

Question 4

Maintaining blood PH

Answer 4

-due to the buffering action of carbonic acid and bicarbonate ions
-H+ is also secreted

Question 5

Dialysis

Answer 5

-Diffusion of dissolved substances through semipermeable membrane