vas rectum

Etymology
First attested in 1750; : +  (neuter nominative singular of, “straight”) = “straight vessel”.

Noun

 * 1)  One of a number of straight vasa (tubes),
 * 2)  A straight  tubule conveying  from its pertaining ' (convoluted seminiferous tubule) to the ' of the  that contains it;  the  (straight seminiferous tubule).
 * 3) * 1750, Albert Haller, “Of the paſſages of the ſemen” in The Philoſophical Tranſactions (1743–1750) Abridged X (1756), ed. John Martyn, page 1,092
 * 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.
 * 1)  Any one of many straight capillaries in the  that branch off from the arteriolae efferentes (efferent arterioles) of  nephrons, enter the, and surround the , where they function to absorb  and to  salt and  into the renal , thereby facilitating the production of concentrated.
 * 2) * 1858, Lionel Smith Beale, Illustrations of the Constituents of Urine, Urinary Deposits, and Calculi, Fig. 1. g., page 3
 * Long and almost straight vessels (vasa recta), into which the efferent vessel of those tufts situated at the bases of the pyramids, divides.
 * 1) Any one of numerous straight arteries that branch off from the arcades of the  of the  and  whence they head toward the.
 * Long and almost straight vessels (vasa recta), into which the efferent vessel of those tufts situated at the bases of the pyramids, divides.
 * 1) Any one of numerous straight arteries that branch off from the arcades of the  of the  and  whence they head toward the.
 * 1) Any one of numerous straight arteries that branch off from the arcades of the  of the  and  whence they head toward the.