noun
venous sinus
General anatomical term for a large vein or channel carrying venous blood, such as the dural venous sinuses.
硬膜静脈洞は脳の静脈血を集める。
The dural venous sinuses collect venous blood from the brain.
noun
sinus venosus
Specifically refers to the sinus venosus, a developmental structure in the embryonic heart that later forms part of the right atrium.
胎児の心臓では静脈洞が右心房の一部になる。
In the fetal heart, the sinus venosus becomes part of the right atrium.