| preventive medicine | Medicine designed to avert and avoid disease. Screening for hypertension and treating it before it causes disease is good preventive medicine. Preventive medicine is a proactive approach. (12 Dec 1998) |
|---|---|
| preventive psychiatry | A discipline concerned with the prevention of mental illness and the promotion of mental health. (12 Dec 1998) |
| preventive treatment | The institution of measures designed to protect a person from an attack of a disease to which he has been, or is liable to be exposed. Synonym: preventive treatment. (05 Mar 2000) |
| prevertebral | <anatomy> Situated immediately in front, or on the ventral side, of the vertebral column; prespinal. Source: Websters Dictionary (01 Mar 1998) |
| prevertebral fascia | The part of the cervical fascia which covers the bodies of the cervical vertebrae and the muscles attaching to them and to the anterior parts of their transverse processes. Synonym: lamina prevertebralis, prevertebral layer. (05 Mar 2000) |
| prevertebral ganglia | The sympathetic ganglia (coeliac, aorticorenal, superior and inferior mesenteric) lying in front of the vertebral column, as distinguished from the ganglia of the sympathetic trunk (paravertebral ganglia); these ganglia occur mostly around the origin of the major branches of the abdominal aorta; all are in the abdomino-pelvic cavity, concerned with innervation of abdomino-pelvic viscera. (05 Mar 2000) |
| prevertebral layer | The part of the cervical fascia which covers the bodies of the cervical vertebrae and the muscles attaching to them and to the anterior parts of their transverse processes. Synonym: lamina prevertebralis, prevertebral layer. (05 Mar 2000) |
| prevertebral lymph nodes | Lymph nodes posterior to the thoracic aorta. Synonym: nodi lymphatici prevertebrales. (05 Mar 2000) |
| prevertebral part of vertebral artery | See: vertebral artery. (05 Mar 2000) |
| prevesical | Anterior to the bladder; denoting especially the retropubic space. Origin: pre-+ L. Vesica, bladder (05 Mar 2000) |
| previllous chorion | The chorion before its villi are well formed. Synonym: previllous chorion. (05 Mar 2000) |
| previllous embryo | The embryo of a placental mammal prior to the formation of chorionic villi. (05 Mar 2000) |
| prevision | Foresight; foreknowledge; prescience. Origin: Cf. F. Prevision. Source: Websters Dictionary (01 Mar 1998) |
| previus | Obstructing; denoting anything blocking the passages in childbirth. Origin: L. Prae, before, + via, way (05 Mar 2000) |
| prevotella | A genus of gram-negative, anaerobic, nonsporeforming, nonmotile rods. Organisms of this genus had originally been classified as members of the bacteroides genus but overwhelming biochemical and chemical findings in 1990 indicated the need to separate them from other bacteroides species, and hence, this new genus was established. (12 Dec 1998) |