| reservoir | 1. <anatomy> A place or cavity for storage, for anatomical structures serving as a storage space for fluids. 2. <geography> A place where anything is kept in store; especially, a place where water is collected and kept for use when wanted, as to supply a fountain, a canal, or a city by means of aqueducts, or to drive a mill wheel, or the like. 3. <botany> A small intercellular space, often containing esin, essential oil, or some other secreted matter. Receiving reservoir, a principal reservoir into which an aqueduct or rising main delivers water, and from which a distributing reservoir draws its supply. 4. <microbiology> A reservoir host or reservoir of infection, an alternate or passive host or carrier that harbours pathogenic organisms, without injury to itself and serves as a source from which other individuals can be infected. Origin: F. Reservoir, LL. Reservatorium, from server = to reserve (27 Oct 1998) |
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| reservoir bag | A collapsible reservoir from which gases are inhaled and into which gases may be exhaled during general anaesthesia or artificial ventilation. Synonym: reservoir bag. (05 Mar 2000) |
| reservoir host | The host of an infection in which the infectious agent multiplies and/or develops, and upon which the agent is dependent for survival in nature; the host essential for the maintenance of the infection during times when active transmission is not occurring. (05 Mar 2000) |
| reservoir of infection | Living or nonliving material in or on which an infectious agent multiplies and/or develops and is dependent for its survival in nature. (05 Mar 2000) |
| reservoir of spermatozoa | The site where spermatozoa are stored; the distal portion of the tail of the epididymis and the beginning of the ductus deferens. (05 Mar 2000) |
| reservoir, ommaya | A device implanted under the scalp and used to deliver anticancer drugs to the fluid surrounding the brain and spinal cord. (12 Dec 1998) |
| vitelline reservoir | In cestodes and trematodes, a common chamber receiving vitelline (yolk) material from the two vitelline ducts; the yolk material then passes into the ootype to surround the ovum with nutritive vitelline granules that are enclosed by a characteristically formed eggshell. Synonym: vitelline reservoir. (05 Mar 2000) |
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| Pecquet's reservoir | A dilated sac at the lower end of the thoracic duct into which the intestinal trunk and two lumbar lymphatic trunks open; it occurs inconstantly and when present is located posterior to the aorta on the anterior aspect of the bodies of the first and second lumbar vertebrae. Synonym: ampulla chyli, chyle cistern, chylocyst, Pecquet's cistern, Pecquet's reservoir, receptaculum chyli, receptaculum pecqueti. (05 Mar 2000) |
| ommaya reservoir | <apparatus> A device with a fluid reservoir implanted under the scalp with a catheter to a ventricle. It allows for medication to be given directly to the CSF and into the brain. (16 Dec 1997) |