vaso-
(ˈveɪsəʊ)
combining form, on Gr. types, of L. vās vas, employed in terms of Phys. and Path. relating to the vascular system or parts of this, as vaso-cellular adj., vaso-constricting adj., vaso-constriction, vaso-constrictive adj., vaso-constrictor, vaso-dentinal adj., vaso-dentine, vaso-dilatation, vaso-dilating adj., vaso-dilation, vaso-dilator, vaso-ganglion, vaso-inhibitory adj., vaso-motive adj.; vasoliˈgation Surg., ligation of a vessel, esp. of the vasa deferentia; ˈvasospasm a sudden constriction of a blood vessel, resulting in reduced flow; hence vasoˈspastic a.; vasoˈvagal a., involving the vagus nerve and the vascular system: applied to an attack (often the result of emotional stress) in which there is a slowing of the pulse and a fall in blood pressure, causing pallor, fainting, sweating, and nausea; ˌvasovaˈsostomy Surg. [-stomy], an operation to reverse a vasectomy by rejoining the cut ends of the vasa deferentia.
| 1847 Todd's Cycl. Anat. III. 1026/2 *Vaso-cellular structure [of the penis]. |
| 1925 Proc. R. Soc. B. XCVII. 325 The toxic and *vaso⁓constricting action..has not been confronted by us provided we make use of freshly defibrinated blood. 1975 Daily Colonist (Victoria, B.C.) 16 July 2/3 One of the vasoconstricting drugs..can be helpful. |
| 1899 Allbutt's Syst. Med. VII. 249 The velocity of the blood flow is increased, whenever the arterial pressure is raised by general *vaso-constriction. |
| 1890 W. James Princ. Psychol. I. 97 Slowing and quickening of the heart..are independent of the *vaso-constrictive phenomenon. 1895 Rolleston Dis. Liver 271 To obtain the local vasoconstrictive effect on the bleeding vessels. |
| 1877 M. Foster Physiol. 259 Stimulating a number of *vaso-constrictor nerves. 1896 Allbutt's Syst. Med. I. 112 When the vaso-constrictors alone are acting, the process is retarded. |
| 1851 G. A. Mantell Petrifactions iii. §5. 254 The softer *vaso-dentinal tract of the tooth opposed to it below. |
| 1849–52 Todd's Cycl. Anat. IV. ii. 878 The tubes which convey the capillary vessels through the substance of the osteo- and *vaso-dentine of the teeth of fishes. 1880 Günther Fishes 365 Numerous fissures radiating from the central mass of vasodentine. |
| 1896 Allbutt's Syst. Med. I. 344 When one lower limb was heated, *vaso-dilatation..and sweating were observed in the other lower limb. |
| 1956 Nature 18 Feb. 340/1 The well-known *vasodilating effect of an increased concentration of carbon dioxide. 1962 in L. Kudrow Cluster Headache i. 9 Vasodilating headache: a suggestive classification. 1977 Lancet 30 July 231/1 A drug such as isoprenaline with a cardiac stimulant and peripheral vasodilating action can improve tissue perfusion. |
| 1908 Practitioner Aug. 348 The tourniquet is then released, the affected members then become bright red, owing to a sudden *vasodilation. 1974 M. C. Gerald Pharmacol. vi. 111 Beta-receptor activation causes a widening of small blood vessels (vasodilation). |
| 1881 Nature XXIII. 236 The nerves which act as *vaso-dilators on the mucous membrane of the buccal cavity. |
| 1880 Günther Fishes 155 At the bottom of this sac there is a small *vaso-ganglion,..by which the urine is secreted. |
| 1882 Nature XXVI. 411 Nerves..which, when stimulated, occasion..the dilatation of arteries—the so-called ‘*vaso-inhibitory’ or ‘vaso-dilator’ nerves. |
| 1926 W. N. Berkeley Princ. & Pract. Endocrine Med. ix. 299 Vasectomy or *vasoligation in old men is said..to cause atrophy of the sperm mechanism of the testis. 1932 C. R. Moore in E. Allen Sex & Internal Secretions vii. 314 There is no acceptable evidence that vasectomy or vasoligation has any rejuvenating effect. 1973 Washington Post 13 Jan. a–8/4 The experiments involved the use of the vasectomy technique, or a closely related one called ‘vasoligation’, to close off the two tiny ducts that carry the male spermatozoa. |
| 1865 Intell. Observ. No. 47. 390 Excitation of *vaso-motive action. |
| 1902 Buck's Handbk. Med. Sci. (rev. ed.) V. 74/1 Sedation of maniacal excitement and relaxation of *vaso⁓spasm in melancholic stupor are better accomplished by warm than cold baths. 1977 Lancet 14 May 1039/2 Workers with vibrating hand tools, such as pneumatic drills and chain saws, are at risk of episodic vasospasm, particularly when the vibration is associated with cold exposure. |
| 1932 Glasgow Med. Jrnl. CXVIII. 146 Promising results have been obtained in certain cases of scleroderma in which a *vasospastic element is present. 1980 Brit. Med. Jrnl. 18 Oct. 1033/2 The results..indicate that prostaglandin E1 given by central venous infusion is a safe and effective method of treating severe vasospastic disease. |
| 1907 W. R. Gowers Border-Land of Epilepsy ii. 18 When the vaso-motor spasm preponderates, the case may seem to differ from the type more than it really does. Such cases may be termed ‘*vaso-vagal’. 1974 R. M. Kirk et al. Surgery iii. 41/2 Vasovagal..shock, and fainting caused by an emotional crisis, produce marked dilation of vessels in the muscles, reducing circulatory blood volume. 1976 Nature 27 May 334/2 Some had a frank vasovagal reaction with yawning, bradycardia and pallor and could not continue the test procedure. |
| 1949 New Gould Med. Dict. 1119/1 *Vasovasostomy. 1957 Jrnl. Urol. LXXVIII. 79 For this study vasovasostomy, rather than epididymovasostomy was chosen. 1982 Jrnl. Andrology III. 21/2 Seven patients undergoing vasovasostomy for reversal of male sterility secondary to vasectomy. |
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Add:
vasoˈformative a. [a.
Fr. (L. Ranvier 1874, in
Archives de Physiologie Normale et Pathologique I. 434)], forming vessels.
| 1876 Q. Jrnl. Microsc. Sci. XVI. 246 M. Ranvier describes in the omentum a network of cells which are destined to form new capillary vessels. He therefore designates them ‘*vaso-formative cells’. 1880 Jrnl. R. Microsc. Soc. 582 ‘Vasoformative’ cells. 1931 J. E. Frazer Man. Embryol. vii. 63 The vaso-formative cells in the body of the embryo..begin to lay down a simple system of paired channels, which..render possible some sort of circulation. 1976 Nature 29 July 348/3 The tumours formed are ‘vasoformative sarcomas’.., so it seems that these cells are not fibroblasts but arise from endothelial tissue. |
vasoˈmotion, constriction or dilatation of the blood-vessels.
| 1900 Dorland Med. Dict., *Vasomotion. 1944 Amer. Jrnl. Anat. LXXV. 188 The predominance of the dilator-phases of the vasomotion..occurs when the tissue is tending to become hyperemic. 1989 Lancet 1 Apr. 737/2 The result is abnormal vasomotion and uneven distribution of blood flow. |