HERB 201 Module 1: Herbal Medicine & Alterative Herbs Questions With Complete Solutions

____________ are used for hard woody substances such as roots, barks, and stems whose constituents are water-soluble and non-volatile. correct answer: Decoctions ____________ have a strong, usually pleasant odor, and are obtained predominantly by distillation. correct answer: Essential oils Tinctures are preparations that extract the medicinal substances of herbs into a solution using ___________, vegetable glycerin, or vinegar. correct answer: alcohol The therapeutic margin is the dividing line between _______. correct answer: effectiveness and toxicity An excessive dose of ________ can cause irritation to the stomach wall and liver damage. If a cold infusion is prepared, only a small proportion is absorbed. correct answer: tannins Saponins are natural compounds that are very similar to glycosides, but can be distinguished because they dissolve in water and produce a _________. correct answer: durable foam True or False: Fluid extracts are generally twice the strength of a tincture and contain only small quantities of alcohol. correct answer: True Ointments can use which of the following as a base? correct answer: Lanolin Oil Beeswax All of the above Herbs contain medicinal chemical substances that are known as what kind of constituents? correct answer: Active True or False: All botanicals require a 90% alcohol concentration to extract their active constituents in a tincture. correct answer: False