a unit of energy equal to the energy of one watt operating for one hour, equivalent to 3600 joules. Abbreviation: Wh. Electricity is usually purchased by the kilowatt hour, and measured by the watt-hour meter (Fig. 160). A watt-hour is the amount of energy needed by a device which uses one watt and is operated for one hour. watt-hour. 1. a unit of energy equal to a power of one watt operating for one hour. watt-hour. A unit of energy, especially electrical energy, equal to the work done by one watt acting for one hour. It is equivalent to 3,600 joules.
Blood carries nutrients and oxygen to the muscle tissue in the body. Photo Credit Aaron Lindberg/Stockbyte/Getty Images. Blood carries nutrients and oxygen to the tissues of the body, including the muscles. A complex network of blood vessels, called arteries, takes the blood from the heart to the muscles.Then a different set of blood vessels, called veins, takes deoxygenated blood from the muscles back to the heart and gets rid of waste products that build up in the muscles.lood Pressure and Blood Flow. Blood pressure drives blood through the circulation. As the blood vessels narrow to become capillaries, the blood pressure drops. This difference in pressure drives blood flow to the tissues.
Figure 1: Kidney Anatomy. Blood enters the kidney through the renal artery. In the kidney, the blood undergoes filtration and dialysis to separate the particles that will be removed from the body (through the ureter to the bladder) from those that will be returned to the circulating blood (through the renal vein).