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.
While milk thistle is most often used for liver conditions, such as hepatitis and cirrhosis, the herb is also said to fight the following health issues: 1  Depression. 2  Diabetes. 3  Gallbladder disorders. 4  Hangovers. Heartburn.  High 1  cholesterol. Insulin resistance.  Menstrual 1  problems. Parkinson's 2  disease. Seasonal allergies.