The Needles are very thin, hollow tube with a single sharp tip. The word "needle" is derived from the Greek words "o-" (hypo-, which means under), and "derma," which means skin. It is frequently used to inject things into the body (such as saline solution, solutions containing various pharmaceuticals or liquid medicines), or to withdraw fluids from the body, using a syringe, a hand-operated device with a plunger (e.g., blood). Large-bore hypodermic intervention is very helpful for treating shock or catastrophic blood loss.
The Needles are used to quickly administer liquids or when the drug being injected cannot be consumed because it would either not be absorbed (like with insulin) or would injure the liver. Certain drugs that cannot be administered orally owing to vomiting can also be supplied this way. The two most popular injection delivery methods are intramuscular (into a muscle) and intravenous (into a vein). It is strongly advised to use a fresh syringe each time because a hypodermic syringe has the capacity to store liquid and blood for years after the last usage.
Read More- http://latestcmiblogs.weebly.com/article/needles-are-used-to-inoculate-medicines-under-the-skin
