infant, very low birth weight |
An infant having a birth weight of 1500 grams (3.3 lb.) or less.
(12 Dec 1998) |
acceptor control |
<biochemistry> The regulation of the respiration rate, governed by ADP's ability to be a phosphate group acceptor.
(06 May 1997) |
anticipatory control |
<physiology> The regulation of a system or process based on anticipated events, this isa feed-forward rather than a feedback system.
(09 Oct 1997) |
assist-control ventilation |
Artificial respiration in which inspiration is produced automatically after a set interval if the person has not already begun to inspire.
Compare: assisted ventilation, controlled ventilation.
(05 Mar 2000) |
autogenous control |
<molecular biology> Regulation of how much a gene gets transcribed by the gene's own products.
(02 Jan 1998) |
aversive control |
<psychology> Control of the behaviour of another individual by use of psychologically noxious means; e.g., attempting to force better study habits by withholding a child's allowance, or withholding sexual contact unless the partner complies with a request.
(05 Mar 2000) |
biological control |
<agriculture> The agricultural use of living things, such as parasites, diseases, and predators, to control or eliminate others, such as weeds and pests, rather than by using chemicals (herbicides and pesticides).
(21 Mar 1998) |
gate-control hypothesis |
A theory to explain the mechanism of pain; small fibre afferent stimuli, particularly pain, entering the substantia gelatinosa can be modulated by large fibre afferent stimuli and descending spinal pathways so that their transmission to ascending spinal pathways is blocked (gated).
Synonym: gate-control hypothesis.
(05 Mar 2000) |
gate-control theory |
A theory to explain the mechanism of pain; small fibre afferent stimuli, particularly pain, entering the substantia gelatinosa can be modulated by large fibre afferent stimuli and descending spinal pathways so that their transmission to ascending spinal pathways is blocked (gated).
Synonym: gate-control hypothesis.
(05 Mar 2000) |
case-control study |
<epidemiology> A study in which the risk factors of people with a disease are compared with those without a disease.
It is an epidemiological method that begins by identifying persons with the disease or condition of interest (the cases) and compares their past history of exposure to identified or suspected risk factors with the past history of similar exposures among persons who resemble the cases but do not have the disease or condition of interest (the controls).
The relationship of an attribute to the disease can therefore be examined by comparing affected and non-affected individuals with regard to the frequency or levels of the attribute in each group.
(05 May 2002) |
vestibulo-equilibratory control |
Nerve impulses transmitted from the saemicircular canals, saccule, and utricle that serve to maintain the equilibrium of the body.
(05 Mar 2000) |
reflex control |
Nerve impulses transmitted to the muscles to maintain normal reflex action.
(05 Mar 2000) |
relaxed control |
The ability of certain plasmids to continue to replicate after their bacteria stop dividing, theresult is a single bacteria that containshundreds of plasmids.
(09 Oct 1997) |
Centers for Disease Control and Prevention |
<organisation> The U.S. Public health agency serving as the centre for preventing, tracking controlling and investigating the epidemiology of AIDS and other diseases.
(26 Mar 1998) |
reproductive control agents |
Substances used either in the prevention or facilitation of pregnancy.
(12 Dec 1998) |