- Agriculture, Forestry & Soils
- Field crops, grasses, plant fibers, spices, tree crops, herbs
Strausbaugh, Perry D. Department of Botany, West Virginia University, Morgantown, West Virginia.
Core, Earl L. Department of Biology, West Virginia University, Morgantown, West Virginia.
Last reviewed:February 2018
Show previous versions
- Related Primary Literature
- Additional Reading
The name (Spanish in origin) for the dried leaves, stems, seeds, and flowering tops of the hemp plant, Cannabis sativa, which can be smoked in cigarette form or in a pipe. Marijuana is the Spanish-derived name for the dried leaves, stems, seeds, and flowering tops of the hemp plant (Cannabis sativa; family Cannabaceae or Cannabinaceae) [see illustration]. For thousands of years, humans have consumed marijuana (in edible, smokeable, and vaporized forms) because of its psychoactive effects (the narcotic ingredients of marijuana have stimulating effects) and its purported medical efficacies. Despite sharp legal restrictions in most nations, the use of marijuana has not been eliminated. In fact, marijuana remains as the most common illicit drug in the world. After smoking two or three marijuana cigarettes, the experienced smoker often has a feeling of well-being and increased power and ability. After excessive amounts of the drug, illusions are often common, along with pleasing, fanciful hallucinations. Sometimes, the excessive user experiences disorientation and even delirium. See also: Addiction and Addictive disorders; Hallucination; Hemp; Narcotic; Psychotomimetic drugs; Rosales
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 45 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information