| 单词 | sinus venosus |
| 释义 | > as lemmassinus venosus sinus venosus n. [modern Latin, < venōsus venous] a part of some vertebrate hearts into which the veins lead and which empties into the atrium. ΘΚΠ the world > life > the body > vascular system > heart > [noun] > other parts of heart-rootc1390 cone1615 sinus venosus1836 cor pulmonale1857 pacemaker1910 the world > animals > animal body > general parts > internal organs and systems > [noun] > heart, liver, or lungs > part of heart into which veins lead sinus venosus1836 1836–9 Todd's Cycl. Anat. & Physiol. II. 579/2 This division of the auricle into proper auricle and sinus venosus is more distinct in the left than in the right auricle. 1926 J. S. Huxley Ess. Pop. Sci. 199 The ventricle of the frog's heart has its own independent rate of beat when isolated. But in the intact animal this independent rate is all the time being speeded up by the faster-beating sinus venosus. 1970 Encycl. Biol. Sci. (ed. 2) 400/2 In the fish, amphibians, and reptiles the contraction starts in the thin muscle wall of the sinus venosus... In birds and mammals the sinus venosus is absent. < as lemmas |
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