请输入您要查询的英文单词:

 

单词 pseudo-heart
释义

> as lemmas

pseudo-heart
pseudo-heart n.
Brit. /ˈs(j)uːdə(ʊ)hɑːt/
,
U.S. /ˈsudoʊˌhɑrt/
Zoology (a) (in a brachiopod) any of several tubular organs connecting the body cavity and the pallial cavity (obsolete); (b) (in an oligochaete worm) any of several lateral contractile blood vessels which assist in the circulation of blood.
ΚΠ
1856 A. Hancock in Proc. Royal Soc. 8 464 There are usually three apertures opening into the pallial chamber; of these one is the mouth,—the other two are situated at the apices of the organs which have been described as ‘hearts’. In Rhynchonella..there are four such ‘pseudo-hearts’.
1877 T. H. Huxley Man. Anat. Invertebrated Animals viii. 465 It is probable that these ‘pseudo-hearts’ subserve the function both of renal organs and of genital ducts.
1939 T. L. Green Pract. Animal Biol. i. 34Pseudo-hearts’, five pairs of contractile loops lying in segments 8 to 11 which drive blood from the dorsal vessel down to the sub-intestinal vessel.
1999 Invertebr. Biol. 118 185/1 Thin filaments of smooth muscles, such as in the pseudo-heart of the annelid Eisenia foetida.
extracted from pseudo-comb. form
<
as lemmas
随便看

 

英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2024/9/20 20:36:49