vas rectum

短语

发音

UK /ˈvɑːs ˈɹɛktəm/

词形变化

vasa recta 复数 vasa recta

释义与例句

n.
  1. 1.

    One of a number of straight vasa (tubes), specifically:

    Any one of numerous straight arteries that branch off from the arcades of the mesentery of the jejunum and ileum whence they head toward the small intestine.

    医学
  2. 2.

    One of a number of straight vasa (tubes), specifically:

    A straight seminiferous tubule conveying semen from its pertaining tubulus seminiferus contortus (convoluted seminiferous tubule) to the rete testis of the testicle that contains it; now more commonly called the tubulus seminiferus rectus (straight seminiferous tubule).

    过时 医学

    A yellowiſh ſemen is generated in the vaſcula ſerpentina, is ſent down into the vasa recta, and thence depoſited in the rete under the albuginea.

  3. 3.

    One of a number of straight vasa (tubes), specifically:

    Any one of many straight capillaries in the kidney that branch off from the arteriolae efferentes (efferent arterioles) of juxtamedullary nephrons, enter the medulla, and surround the loop of Henle, where they function to absorb water and to secrete salt and urea into the renal interstitium, thereby facilitating the production of concentrated urine.

    医学

    Long and almost straight vessels (vasa recta), into which the efferent vessel of those tufts situated at the bases of the pyramids, divides.

词源

First attested in 1750. From Latin vās (“vessel”) + rēctum (neuter nominative singular of rēctus, “straight”), literally “straight vessel”.

来源：wiktionary