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81Cardiology — [ ECG indicator; diagrams like this are used in Cardiology.] Cardiology (from Greek gr. καρδίᾱ, kardiā , heart ; and gr. λογία, logia ) is the branch of internal medicine dealing with disorders of the heart and blood vessels. The field is… …
82Diuretic — This illustration shows where some types of diuretics act, and what they do. A diuretic provides a means of forced diuresis which elevates the rate of urination. There are several categories of diuretics. All diuretics increase the excretion of… …
83History of Microsoft Windows — In 1983, Microsoft announced the development of Windows, a graphical user interface (GUI) for its own operating system (MS DOS), which had shipped for IBM PC and compatible computers since 1981. The product line has changed from a GUI product to… …
84Pressure measurement — The construction of a bourdon tube gauge, construction elements are made of brass Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A… …
85Microcode — is a layer of hardware level instructions and/or data structures involved in the implementation of higher level machine code instructions in many computers and other processors; it resides in special high speed memory and translates machine… …
86Nitroglycerin — This article is about the chemical properties of nitroglycerin and its use as an explosive. For medical and pharmacological applications, see glyceryl trinitrate (pharmacology). Nitroglycerin …
87Pulse — For other uses, see Pulse (disambiguation). Pulse evaluation at the radial artery. In medicine, one s pulse represents the tactile arterial palpation of the heartbeat by trained fingertips. The pulse may be palpated in any place that allows an… …
88Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… …
89Blood pressure — For information about high blood pressure, see Hypertension. Blood pressure Diagnostics A sphygmomanometer, a device used for measuring arterial pressure. MeSH …
90Circulatory system — This article is about the organ system. For the band, see Circulatory System. For transport in plants, see Vascular tissue. Circulatory system …
