Drainage basin: The area drained by a river and its tributaries. A drainage basin is considered to be an open system because water can be added or lost from a drainage basin. Source: The beginning of a river. A river may have multiple sources.
Milk thistle (Silybum marianum) is a thorny plant presenting decorative leaves with a white pattern of veins and purple flower heads. The plant originates from mountains of the Mediterranean region, where it forms scrub on a rocky base.
The herbal supplement milk thistle has been used in traditional medicine for thousands of years, most notably to treat disorders of the gallbladder and liver. With flavenoids called silymarin, this is a natural means of cleansing the liver and repairing damage. Milk thistle (silybum marianum) works in several ways. First, the herb assists your liver in the detoxification process while also inhibiting any incoming toxins by offering protection to each cell in your liver.