| vessel element | Part of a xylem vessel in a higher plant, arising from a single cell. The end walls are perforated and may completely disappear, giving rise to a continuous tube. The remaining walls are thickened and lignified and there is no protoplast. (18 Nov 1997) |
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| collateral vessel | A branch of an artery running parallel with the parent trunk, a vessel that runs in parallel with another vessel, nerve, or other long structure. Synonym: vas collaterale. (05 Mar 2000) |
| containment vessel | <radiobiology> Gas-tight shell or other enclosure around a fusion (or fission) reactor, to prevent accidental leakage of radioactive contents. (09 Oct 1997) |
| coronary vessel anomalies | Defects of coronary arteries or veins including anomalous origin, arteriovenous fistula or aneurysm, myocardial bridging, or other abnormalities of structure or development. (12 Dec 1998) |
| nutrient vessel | <anatomy, artery> An artery of variable origin that supplies the medullary cavity of a long bone. Synonym: arteria nutricia, nutrient vessel. (05 Mar 2000) |
| superficial lymphatic vessel | One of the lymphatic vessels that lie in the skin and subcutaneous tissues; they join the deep lymphatic vessels. Synonym: vas lymphaticum superficiale. (05 Mar 2000) |
| deep lymphatic vessel | One of the vessels that drain lymph from the deep structures of the body; they tend to follow the courses of blood vessels to reach regional lymph nodes. Synonym: vas lymphaticum profundum. (05 Mar 2000) |
| efferent vessel | A vessel carrying blood away from the heart. An artery or arteriole. (12 Dec 1998) |
| lacteal vessel | 1. Pertaining to, or resembling, milk; milky; as, the lacteal fluid. 2. <anatomy> Pertaining to, or containing, chyle; as, the lacteal vessels. Origin: L. Lacteus milky, fr. Lac, lactis, milk. Cf. Galaxy, Lettuce. <anatomy> One of the lymphatic vessels which convey chyle from the small intestine through the mesenteric glands to the thoracic duct; a chyliferous vessel. Source: Websters Dictionary (01 Mar 1998) |
| lymphatic vessel | <anatomy> Vessels that remove cellular waste from the body by filtering through lymph nodes and eventually emptying into the blood system. They are similar to blood vessels but transport lymph fluid. (14 Oct 1997) |
| lymphatic vessel tumours | Neoplasms composed of lymphoid tissue, a lattice work of reticular tissue the interspaces of which contain lymphocytes. The concept does not refer to neoplasms located in lymphatic vessels. (12 Dec 1998) |