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Prefix meaning "position away from". [1] abaxial Surface of an organ facing away from the organ's axis, e.g. the lower surface of a lateral organ such as a leaf or petal. [2] Contrast adaxial. abort To abandon development of a structure or organ. [3] abscission Natural shedding of an organ that is mature or aged, as of a ripe fruit or an old ...
The botanical herbal market has been criticized for being poorly regulated and containing placebo and pseudoscience products with no scientific research to support their medical claims. [4] Medicinal plants face both general threats, such as climate change and habitat destruction , and the specific threat of over-collection to meet market demand.
Such disciplines as medical microbiology, clinical virology, clinical epidemiology, genetic epidemiology and pathophysiology are medical sciences. Biomonitoring – measurement of the body burden of toxic chemical compounds, elements, or their metabolites, in biological substances. [23] [24] Often, these measurements are done in blood and urine ...
Botany, also called plant science or phytology, is the branch of natural science and biology studying plants, especially their anatomy, taxonomy, and ecology. [1] A botanist, plant scientist or phytologist is a scientist who specialises in this field.
In Ladakh, Lahul-Spiti, and Tibet, the Tibetan Medical System is prevalent, also called the "Amichi Medical System". Over 337 species of medicinal plants have been documented by C.P. Kala. Those are used by Amchis, the practitioners of this medical system. [82] [83] The Indian book, Vedas, mentions treatment of diseases with plants. [84]
The word "pharmacognosy" is derived from two Greek words: φάρμακον, pharmakon , and γνῶσις gnosis or the Latin verb cognosco (con, 'with', and gnōscō, 'know'; itself a cognate of the Greek verb γι(γ)νώσκω, gi(g)nósko, meaning 'I know, perceive'), [3] meaning 'to conceptualize' or 'to recognize'.
The use of plants for medicinal purposes, and their descriptions, dates back two to three thousand years. [10] [11] The word herbal is derived from the mediaeval Latin liber herbalis ("book of herbs"): [2] it is sometimes used in contrast to the word florilegium, which is a treatise on flowers [12] with emphasis on their beauty and enjoyment rather than the herbal emphasis on their utility. [13]
Sinecatechins, the first botanical drug approved by the US FDA, is an extract from the leaves of Camellia sinensis.. A botanical drug is defined in the United States Federal Food, Drug, and Cosmetic Act as a botanical product that is marketed as diagnosing, mitigating, treating, or curing a disease; a botanical product in turn, is a finished, labeled product that contains ingredients from plants.