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Answer:
The kidneys are two bean-shaped organs located on either side of the spine, just below the ribcage, in the lower back. They play a crucial role in the body's urinary system and are responsible for filtering waste products and excess substances from the blood to produce urine. The kidneys then excrete these waste products through the urinary system.
The primary functions of the kidneys include:
1. Filtration: The kidneys filter waste products, excess salts, and water from the blood to produce urine.
2. Regulation: The kidneys help regulate the body's fluid balance, blood pressure, and electrolyte levels by controlling the amount of water and salts in the urine.
3. Excretion: The kidneys excrete waste products, such as urea, from the body through the urine.
4. Secretion: The kidneys secrete various substances into the urine, such as hydrogen ions, to help regulate the body's pH balance.
5. Reabsorption: The kidneys reabsorb essential substances, such as glucose, amino acids, and water, from the filtrate back into the bloodstream to prevent their loss in the urine.
In summary, the kidneys play a vital role in maintaining the body's internal environment by filtering waste products and excess substances from the blood, regulating fluid balance and electrolyte levels, and excreting waste products through the urinary system.
The kidneys are two bean-shaped organs located in the lower back, on either side of the spine. They are part of the urinary system and play a crucial role in maintaining overall health.