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What is a "gill"?
A gill is a respiratory organ found in many aquatic organisms, including fish and some invertebrates, that enables them to extract oxygen from water. Gills are typically composed of thin, filamentous structures arranged in rows or clusters. These filaments are rich in blood vessels and covered by a thin layer of tissue, creating a large surface area for gas exchange. As water flows over the gills, oxygen is absorbed from the water into the bloodstream, while carbon dioxide is released. Gills are well-adapted for efficient gas exchange in aquatic environments, allowing organisms to extract the oxygen they need to survive. In addition to their respiratory function, gills may also play a role in filter-feeding or sensing the surrounding water for chemical cues.
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branquia
What is "gill"?
In the United States, the gill is a unit of volume measurement primarily used in historical contexts and in some specialized fields. It is rarely used in modern-day applications, and its usage is not widespread. One US gill is equal to a quarter of a US liquid pint, approximately 4 fluid ounces or 118.294 milliliters. While the gill was once a common measurement for liquids, particularly in the beverage industry, it has largely been replaced by other units such as fluid ounces and liters.
branquia
What is "gill"?
In the United Kingdom, a gill is a unit of measurement for both liquid and dry goods, although it is primarily used for liquids. The gill is abbreviated as "gi" or "gill" and is equal to a quarter of a pint. Also, one gill is equal to 5 fluid ounces which is approximately 142.065 milliliters. Gill measurements are less commonly used today but can still be found in historical or traditional contexts, such as in older recipes or pub measurements.
