sinus venosus

English

Alternative forms

• (pouch adjoining the heart): venous sinus

Etymology

Unadapted borrowing from New Latin sinus vēnōsus (“venous hollow”).

Pronunciation

• (Received Pronunciation) IPA^(key): /ˌsʌɪ.nəs viːˈnəʊ.səs/
• (General American) IPA^(key): /ˌsaɪ.nəs ˌviˈnoʊ.səs/
• Rhymes: -əʊsəs

Noun

sinus venosus (plural sinus venosi)

1. (zootomy) The first chamber of the heart in fish, amphibians, and reptiles, emptying into the right atrium.
2. (anatomy) An enlarged pouch that adjoins the heart, is formed by the union of the large systemic veins, and is the passage through which venous blood enters the heart in lower vertebrates and in embryos of higher forms.

Translations

pouch adjoining the heart

• Chinese:

  Mandarin: 靜脈竇／静脉窦 (jìngmài dòu)

References

• “sinus venosus”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.