Excess potassium ion is eliminated from the body by
a) the digestive system
b) the kidneys
c) the spleen
d) sweating
e) the liver
b
The amount of potassium secreted by the kidneys is regulated by?
The amount of potassium secreted by the kidneys is regulated by? ADH
Excess potassium ions are eliminated from the body by the kidneys.
The correct answer is b) the kidneys.
The kidneys play a crucial role in maintaining the balance of various ions, including potassium, in the body. When there is an excess of potassium ions, the kidneys help in eliminating them through the process of filtration, reabsorption, and secretion.
Here's how the kidneys eliminate excess potassium ions from the body:
1. Filtration: The kidneys filter the blood, removing waste products and excess ions, including potassium. Filtration takes place in tiny structures called nephrons.
2. Reabsorption: Most of the filtered potassium ions are reabsorbed back into the bloodstream. However, when there is an excess of potassium, the reabsorption of potassium ions is limited, allowing more of it to be eliminated.
3. Secretion: The excess potassium ions that are not reabsorbed get secreted into the renal tubules, which are part of the nephrons. From there, the potassium ions move into the urine.
4. Excretion: The urine, containing the excess potassium ions, is then passed out of the body through the urinary system when you urinate.
It is worth noting that sweating can also lead to some potassium loss from the body. However, the primary route for eliminating excess potassium ions is through the kidneys.