Identifie 3 kidney functions?

identifie 3 kidney functions that are currently lacking in hemodialysis machines

The kidneys regulate the body's fluid volume, mineral composition and acidity by excreting and reabsorbing water and inorganic electrolytes. This helps balance these substances (which include sodium, potassium, chloride, calcium, magnesium, sulfate, phosphate and hydrogen) in the body and keep their normal concentrations in the extracellular fluid. Body fluid volumes, which are regulated by the kidneys, are related to blood volume and the blood pressure in your arteries.

How does the kidney help regulate blood pressure?

Regulating blood pressure is linked to the kidneys' ability to excrete enough sodium chloride (salt) to maintain normal sodium balance, extracellular fluid volume and blood volume. Kidney disease is the most common cause of secondary hypertension (high blood pressure). Even minor disruptions in kidney function play a role in most (if not all) cases of high blood pressure and increased injury to the kidneys. This injury can eventually cause malignant hypertension, stroke or even death.

In normal people, when there's a higher intake of sodium chloride (salt), the body adjusts. It excretes more sodium without raising arterial pressure. However, many outside influences can reduce the kidneys' ability to excrete sodium. If the kidneys are less able to excrete salt with normal or higher salt intake, chronic increases in extracellular fluid volume and blood volume result. This leads to high blood pressure. When there is an increase in hormones and neurotransmitters that cause blood vessels to narrow, even small increases in blood volume are compounded. (This is due to the smaller area of blood vessel through which the blood is forced to flow.) Although the increases in arterial pressure lead the kidneys to excrete more sodium (which restores the sodium balance), higher pressure in the arteries may persist. This shows the important link between kidney disease and high blood pressure.

kisses

Produces red blood cells
Process fluids
Create electrolytes

*They remove waste products through urine.
*They control the amount of water that stays in your body.
*They maintain the chemical balance of the body.
*They make hormones. These hormones help to control blood pressure, make blood cells, and maintain bones.

filtration
excretion
reabsoption - three func of the kidneys
these are the functio of the dialysis machine
i think the problem is with the Nephron- your kidneys functional unit

filters waste from blood
maintains your bodies water balance
help you pee

The wastes in your blood come from the normal breakdown of active tissues and from the food you eat. Your body uses the food for energy and self-repair. After your body has taken what it needs from the food, waste is sent to the blood. If your kidneys did not remove these wastes, the wastes would build up in the blood and damage your body.

The actual filtering occurs in tiny units inside your kidneys called nephrons. Every kidney has about a million nephrons. In the nephron, a glomerulus鈥攚hich is a tiny blood vessel, or capillary鈥攊ntertwines with a tiny urine-collecting tube called a tubule. A complicated chemical exchange takes place, as waste materials and water leave your blood and enter your urinary system.

At first, the tubules receive a combination of waste materials and chemicals that your body can still use. Your kidneys measure out chemicals like sodium, phosphorus, and potassium and release them back to the blood to return to the body (not possible with dialysis machines). In this way, your kidneys regulate the body鈥檚 level of these substances. The right balance is necessary for life, but excess levels can be harmful.

In addition to removing wastes, your kidneys release three important hormones:

erythropoietin (eh-RITH-ro-POY-eh-tin), or EPO, which stimulates the bone marrow to make red blood cells

renin (REE-nin), which regulates blood pressure

calcitriol (kal-suh-TRY-ul), the active form of vitamin D, which helps maintain calcium for bones and for normal chemical balance in the body
Only the filtering is currently possible with dialysis, the chemicals must be ajusted via supplements etc.