Role of microvilli of cells of kidney tubules??
Role of cilia in cells lining trachaea?
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The microvilli of cells in the kidney tubules and the cilia of cells lining the trachea both have specialized functions in the respective organs.
1. Role of microvilli in kidney tubules:
The kidney tubules, specifically the proximal convoluted tubules, are responsible for reabsorbing nutrients and removing waste products from the blood through urine formation. The microvilli are small, finger-like projections that extend from the surface of these tubular cells. They increase the surface area of the cell, allowing for more efficient absorption and reabsorption processes.
The microvilli in the kidney tubules enhance the reabsorption of water, salts, glucose, and other small molecules from the urinary filtrate. By increasing the surface area available for absorption, the microvilli allow for more efficient reabsorption of these essential substances back into the bloodstream. This mechanism helps maintain the balance of electrolytes, water, and other solutes in the body.
2. Role of cilia in cells lining the trachea:
The trachea, commonly known as the windpipe, is part of the respiratory system and serves as a passageway for air movement between the throat and lungs. The cells lining the trachea have specialized structures called cilia. Cilia are tiny, hair-like protrusions that extend from the surface of these cells.
The primary role of cilia in the tracheal cells is to help remove mucus, dust particles, and other foreign substances from the respiratory tract. The cilia beat in coordinated rhythmic motions, creating a wave-like movement known as mucociliary clearance. This movement helps move the mucus, along with trapped particles, upward toward the throat, where it can be swallowed or coughed out.
The cilia lining the trachea play a vital role in protecting the respiratory system from harmful particles and pathogens. By continuously moving the mucus upward, they prevent accumulation and maintain a clean and clear airway, reducing the risk of infection and irritation.