pressure rises
11Low-pressure area — This depiction of the Hadley cell shows the process which sustains low pressure areas. Diverging winds aloft allow for lower pressure and convergence at the Earth s surface, which leads to upward motion. A low pressure area, or low , is a region… …
12Positive airway pressure — A typical CPAP machine houses the air pump in a case lined with sound absorbing material for quieter operation. A hose carries the pressurized air to a face mask or nasal pillow …
13Intracranial pressure — (ICP) is the pressure inside the skull and thus in the brain tissue and cerebrospinal fluid (CSF). The body has various mechanisms by which it keeps the ICP stable, with CSF pressures varying by about 1 mmHg in normal adults through shifts in… …
14Jugular venous pressure — A man with congestive heart failure and marked jugular venous distension. External jugular vein marked by an arrow. The jugular venous pressure (JVP, sometimes referred to as jugular venous pulse) is the indirectly observed pressure over the… …
15High pressure area — A high pressure area (also called a high or high pressure) is a region where the atmospheric pressure is greater than surrounding areas. In the northern hemisphere high pressure areas move clockwise, whereas they move counter clockwise in the… …
16Low pressure area — A low pressure area, or low , is a region where the atmospheric pressure is lower in relation to the surrounding area. Tropical storms, extratropical cyclones, subpolar cyclones, and subarctic cyclones are called low pressure cells.Lows are… …
17Reduced pressure zone device — A Reduced Pressure Zone Device (RPZD, RPZ or RPZ valve) is a type of backflow prevention device used to protect water supplies from contamination. An RPZD is considered suitable for high hazard applications, that is, where the consequence of… …
18root pressure — noun : the chiefly osmotic pressure or force by which water rises into the stems of plants from the roots * * * Bot. osmotic pressure within the cells of a root system that causes sap to rise through a plant stem to the leaves. [1870 75] * * *… …
19diurnal variation of pressure — A variation of pressure during one 24 h period. Except when weather systems are present, there are two maximum and two minimum pressures per day, and they occur at a constant local time every day. From a maximum at 1000 h, the pressure falls to a …
20root pressure — noun Date: 1875 the chiefly osmotic pressure by which water rises into the stems of plants from the roots …
