| PDL | pancreatic duct ligation; periodontal ligament; poorly differentiated lymphocyte; population doublin... |
|---|---|
| PDT | photodynamic therapy; population doubling time |
| Pop | popliteal; population |
| POPLINE | Population Information Online |
| PP | diphosphate group; emphysema [pink puffers]; near point of accommodation [Lat. punctum proximum]; pa... |
| rapid eye movement sleep | REM sleep, that state of deep sleep in which rapid eye movements, alert EEG pattern, and dreaming occur; several central and autonomic functions are distinctive during this state. (05 Mar 2000) |
|---|---|
| paradoxical movement of eyelids | Spontaneous, involuntary elevation or lowering of the eyelids, associated with movement of extraocular muscles or muscles of mastication (external pterygoids). See: jaw winking. (05 Mar 2000) |
| vermicular movement | <gastroenterology, physiology> The wormlike movement by which the alimentary canal or other tubular organs provided with both longitudinal and circular muscle fibres propel their contents. It consists of a wave of contraction passing along the tube for variable distances. Origin: Gr. Stalsis = contraction (18 Nov 1997) |
| mass movement | Forcible peristaltic movements of short duration, occurring only three or four times a day, which move the contents of the large intestine from one division to the next, as from the ascending to the transverse colon. Synonym: mass movement. (05 Mar 2000) |
| reflex movement | An involuntary movement resulting from a sensory stimulus. (05 Mar 2000) |
| passive movement | Movement imparted to an organism or any of its parts by external agency; movement of any joint effected by the hand of another person, or by mechanical means, without participation of the subject himself. (05 Mar 2000) |
| cell movement | <cell biology> A more general term than locomotion, that can include shape change, cytoplasmic streaming etc. (26 Mar 1998) |
| resistive movement | In massage, a movement made by the patient against the efforts of the operator, or one forced by the operator against the resistance of the patient. (05 Mar 2000) |
| pendular movement | A to-and-fro movement of the intestine, without any propelling or peristaltic action, whereby the contents are churned and thoroughly mixed with the intestinal ferments. (05 Mar 2000) |
| gregarine movement | <biology, microbiology> Peculiar gliding movement shown by gregarines (Protozoa), the mechanism of which is poorly understood. (18 Nov 1997) |
| choreic movement | An involuntary spasmodic twitching or jerking in groups of muscles not associated in the production of definite purposeful movement's. (05 Mar 2000) |
| ciliary movement | The rhythmic, sweeping movement of epithelial cell cilia, of ciliate protozoans, or the sculling movement of flagella, effected possibly by the alternate contraction and relaxation of contractile threads (myoids) on one side of the cilium or flagellum. (05 Mar 2000) |
| circus movement | A contraction or excitation wave traveling continuously in circular fashion around a ring of muscle or through the wall of the heart. Synonym: circus rhythm. (05 Mar 2000) |
| molecular movement | Erratic, nondirectional, zigzag movement observed by ultramicroscope in certain colloidal solutions and by microscope in suspensions of light particulate matter that results from the jostling or bumping of the larger particles by the molecules in the suspending medium which are regarded as being in continuous motion. Synonym: brownian motion, brownian-Zsigmondy movement, molecular movement, pedesis. (05 Mar 2000) |
| morphogenetic movement | <embryology> Movements of cells or of groups of cells in the course of development. Thus the invagination of cells in gastrulation is one of the most dramatic of morphogenetic movements, another much studied example is the migration of neural crest cells. (21 Jun 2000) |