The kidneys excrete a variety of waste products produced by metabolism into the urine. These include the nitrogenous wastes urea, from protein catabolism, and uric acid, from nucleic acid metabolism.


What are the 7 functions of the kidney? Their basic functions include: Regulation of extracellular fluid volume. The kidneys work to ensure an adequate quantity of plasma to keep blood flowing to vital organs. Regulation of osmolarity. Regulation of ion concentrations. Regulation of pH. Excretion of wastes and toxins. Production of hormones.

what is excretion in the kidney?

Urinary Excretion. The primary route in which the body eliminates substances is through the kidneys. The main function of the kidney is the excretion of body wastes and harmful chemicals into the urine. The functional unit of the kidney responsible for excretion is the nephron .

What gets filtered in the kidney? Each of your kidneys is made up of about a million filtering units called nephrons. Each nephron includes a filter, called the glomerulus, and a tubule. The nephrons work through a two-step process: the glomerulus filters your blood, and the tubule returns needed substances to your blood and removes wastes.

How do kidneys excrete urine? The kidneys filter unwanted substances from the blood and produce urine to excrete them. There are three main steps of urine formation: glomerular filtration, reabsorption, and secretion. These processes ensure that only waste and excess water are removed from the body.

How does reabsorption occur in the kidney? Reabsorption is the movement of water and solutes from the tubule back into the plasma. Reabsorption of water and specific solutes occurs to varying degrees over the entire length of the renal tubule. Bulk reabsorption, which is not under hormonal control, occurs largely in the proximal tubule.

What is the function of the kidney? The kidneys are two bean-shaped organs in the renal system. They help the body pass waste as urine. They also help filter blood before sending it back to the heart.

How much water should a kidney patient drink?

The Institute of Medicine has estimated that men need approximately 13 cups (3 liters) of fluid daily, and that women need approximately 9 cups (2.2 liters) of fluid daily. Less is more if you have kidney failure (a.k.a. end stage kidney disease).

How do kidneys excrete drugs?

Most drugs (or metabolites) are excreted by the kidneys. Three process can occur in renal excretion: glomerular filtration, tubular secretion and passive reabsorption. However, many drugs are excreted into bile via the liver and some volatile substances (primarily gaseous anesthetics) can be excreted via the lungs.

What is secreted in the kidney?

The kidneys secrete a variety of hormones, including erythropoietin, calcitriol, and renin. Erythropoietin is released in response to hypoxia (low levels of oxygen at tissue level) in the renal circulation. It stimulates erythropoiesis (production of red blood cells) in the bone marrow.

Can kidneys heal on their own?

“If tubules are damaged they can be repaired but if the damage is severe enough the nephron may be destroyed. Unfortunately the kidney can regenerate and recover, but the kidney cannot make new nephrons, and in that context, its regeneration is limited.”

What are the 3 main electrolytes?

Sodium, calcium, potassium, chloride, phosphate, and magnesium are all electrolytes. You get them from the foods you eat and the fluids you drink. The levels of electrolytes in your body can become too low or too high. This can happen when the amount of water in your body changes.

How much electrolyte water should you drink a day?

However, intake in potassium during training can help maintain water and electrolyte balance. Magnesium intake for males should be between 330-350 mg per day, and females should intake about 255-265 mg per day.

How do you rehydrate your kidneys?

7 Secrets to Keeping Your Kidneys Healthy Hydrate, but don't overdo it. Eat healthy foods. Exercise regularly. Use caution with supplements and herbal remedies. Quit smoking (and vaping!). Don't overdo it with over-the-counter medications. If you're at risk, get regular kidney function screening.

What happens when your electrolytes are out of balance?

The symptoms of electrolyte imbalance are based on which of the electrolyte levels are affected. If your blood test results indicate an altered potassium, magnesium, sodium, or calcium levels, you may experience muscle spasm, weakness, twitching, or convulsions.

Is potassium bad for kidneys?

When kidneys fail they can no longer remove excess potassium, so the level builds up in the body. High potassium in the blood is called hyperkalemia, which may occur in people with advanced stages of chronic kidney disease (CKD). Some of the effects of high potassium are nausea, weakness, numbness and slow pulse.