| PhyS | physiologic saline [solution] |
|---|---|
| PRP | physiologic rest position; pityriasis rubra pilaris; platelet-rich plasma; polyribosyl ribitol phosp... |
| PS | pacemaker syndrome; paired stimulation; paradoxical sleep; paraspinal; parasympathetic; Parkinson sy... |
| PSS | painful shoulder syndrome; physiologic saline solution; porcine stress syndrome; primary Sjogren syn... |
| RPA | radial photon apsorptiometry; replication protein A; resultant physiologic acceleration; reverse pas... |
| HWE | Hardy-Weinberg Equilibrium |
|---|---|
| OEC | Oxygen equilibrium curves |
| ENa | equilibrium potential |
| E(K) | equilibrium potential for K |
| equilibrium constant | <chemistry> The ratio of the reverse and forward rate constants for a reaction of the type: A + B = AB at equilibrium the equilibrium constant (K) equals the product of the concentrations of reactants divided by the concentration of product and has dimensions of concentration. Kd = (concentration A.concentration B) / (concentration AB). The affinity constant (Ka) is the reciprocal of the equilibrium constant. Dimension: moles per litre. In general the concept of Kd is more readily understood than that of Ka, for example: in considering the conversion of A to AB by the binding of ligand B, the Kd = B when A = AB. Thus Kd is equal to the ligand concentration which produces half maximal conversion (response). (10 Jan 1998) |
|---|---|
| equilibrium dialysis | In immunology, a method for determination of association constants for hapten-antibody reactions in a system in which the hapten (dialyzable) and antibody (nondialyzable) solutions are separated by semipermeable membranes. Since at equilibrium the quantity of free hapten will be the same in the two compartments, quantitative determinations can be made of hapten-bound antibody, free antibody, and free hapten. (05 Mar 2000) |
| equilibrium potential | <physiology> The membrane potential at which a particular type of ion or other particle does not diffuse through the membrane in either direction. (09 Oct 1997) |
| linkage equilibrium | <genetics> Situation that should exist in a population undisturbed by selection, migration, etc., in which all possible combinations of linked genes should be present at equal frequency. The situation is no more common than are such undisturbed populations. (18 Nov 1997) |
| calcification, physiologic | Process by which organic tissue becomes hardened by the physiologic deposit of calcium salts. (12 Dec 1998) |
| physiologic | Normal, not pathologic, characteristic of or conforming to the normal functioning or state of the body or a tissue or organ, physiological. (18 Nov 1997) |
| physiologic age | Age estimated in terms of function. (05 Mar 2000) |
| physiologic albuminuria | Presence of slight traces of protein in otherwise normal urine. Synonym: functional albuminuria. (05 Mar 2000) |
| physiologic amenorrhoea | Amenorrhoea of pregnancy or the menopause, not associated with an organic disorder. (05 Mar 2000) |
| physiologic anaemia | An obsolete term for apparent anaemia caused by increased fluid volume of the blood (overhydration). (05 Mar 2000) |
| physiologic anisocoria | A common (20% of normals) benign inequality of the pupils that may change from one hour to the next. Synonym: essential anisocoria, physiologic anisocoria, simple-central anisocoria. (05 Mar 2000) |
| physiologic antidote | An agent that produces systemic effects contrary to those of a given poison. (05 Mar 2000) |
| physiologic congestion | Hyperaemia occurring during functional activity of an organ. Synonym: physiologic congestion. (05 Mar 2000) |
| physiologic cup | The normally occurring depression or pit in the centre of the optic disc. Synonym: excavatio disci, depression of optic disk, excavatio papillae, physiologic cup, physiologic excavation. (05 Mar 2000) |
| physiologic dead space | The sum of anatomic and alveolar dead space; the dead space calculated when the carbon dioxide pressure in systemic arterial blood is used instead of that of alveolar gas in Bohr's equation; it is a virtual or apparent volume that takes into account the impairment of gas exchange because of uneven distributions of lung ventilation and perfusion. (05 Mar 2000) |