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Tubules & Concentration of Filtrate by Dr, Rajeev Ranjan, AIIMS - NEET & AIIMS preparation videos Video Lecture
FAQs on Tubules & Concentration of Filtrate by Dr, Rajeev Ranjan, AIIMS - NEET & AIIMS preparation videos Video Lecture
| 1. What are tubules and how do they play a role in the concentration of filtrate? |  |
Ans. Tubules are small structures in the kidneys that are responsible for filtering and reabsorbing substances from the blood. They play a crucial role in the concentration of filtrate by selectively reabsorbing water and solutes. As the filtrate passes through the tubules, water and essential solutes are reabsorbed back into the bloodstream, while waste products and excess substances are further concentrated and eventually excreted as urine.
| 2. How does the concentration of filtrate affect the overall function of the kidneys? | |
Ans. The concentration of filtrate is essential for maintaining the body's water balance and regulating blood pressure. By selectively reabsorbing water and solutes, the kidneys can adjust the concentration of urine based on the body's needs. This process helps in conserving water when the body is dehydrated and excreting excess water when the body is adequately hydrated. The concentration of filtrate also plays a role in the excretion of waste products and toxins from the body.
| 3. What factors influence the concentration of filtrate in the tubules? | |
Ans. Several factors influence the concentration of filtrate in the tubules. These include the release of antidiuretic hormone (ADH) by the pituitary gland, which increases water reabsorption in the tubules, and the permeability of the tubules to water and solutes. Additionally, the concentration of solutes in the bloodstream, such as electrolytes and glucose, also affects the concentration of filtrate. Hormonal regulation and the body's overall hydration status play a significant role in determining the concentration of filtrate in the tubules.
| 4. How does the process of reabsorption in the tubules contribute to the concentration of filtrate? | |
Ans. Reabsorption in the tubules is a vital process that contributes to the concentration of filtrate. As the filtrate passes through the tubules, water and essential solutes are reabsorbed back into the bloodstream. This reabsorption occurs through active transport and passive diffusion mechanisms. By selectively reabsorbing water and solutes, the tubules can concentrate the filtrate, removing excess substances and waste products. This allows the kidneys to maintain the body's water balance and excrete concentrated urine.
| 5. What is the significance of the concentration of filtrate in maintaining overall body homeostasis? | |
Ans. The concentration of filtrate plays a crucial role in maintaining overall body homeostasis. It helps regulate blood pressure by controlling the volume of fluid in the body. By selectively reabsorbing water and solutes, the kidneys can adjust the concentration of urine and conserve or excrete water as needed. The concentration of filtrate also aids in the excretion of waste products and toxins, ensuring the body remains in a balanced state. Additionally, it helps maintain electrolyte balance and supports the proper functioning of various organs and systems in the body.
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