Commodities are raw materials intended for use or consumption. There are three main commodity classifications: Agriculture commodities (often referred to as soft commodities), energy commodities, and metal commodities (referred to as hard commodities). The most commonly traded commodities are crude oil, gold, silver, and copper. Commodity markets can include physical delivery, referred to as a spot contract. Most trades, however, are carried out through derivative trading using futures, forwards, CFD's, and options.
Donna Perrin, RGN, is practice development sister, A&E, Frimley Park Hospital, Surrey. Fluid resuscitation is one of the most important aspects of the acute medical management of critically ill patients.
The sinus venosus receives unoxygenated blood from the body. A valve at the end of the sinus venosus opens into the atrium. b. The atrium has thick, muscular walls. The atrium receives unoxygenated blood and pumps it into the ventricle. c. The ventricle is the largest and most muscular chamber of the heart. valve at the end of the sinus venosus opens into the atrium. b. The atrium has thick, muscular walls. The atrium receives unoxygenated blood and pumps it into the ventricle. c. The ventricle is the largest and most muscular chamber of the heart.