sinus venosus


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sinus ve·no·sus

 (vē-nō′səs)
n.
The first chamber in the heart of fish, amphibians, reptiles, and the embryos of birds and mammals, which receives blood from the veins and contracts to force the blood into the atrium.

[New Latin sinus vēnōsus : Medieval Latin sinus, sinus + Latin vēnōsus, venous.]
References in periodicals archive ?
The most common variant of PAPVC is the defect located in sinus venosus malformation i.
INTRODUCTION: Cor triatriatum dexter, or partitioning of the right atrium (RA) to form a triatrial heart, is an extremely rare congenital anomaly that is caused by the persistence of the right valve of the sinus venosus.
1) Some authors believe that the cause is congenital, owing to persistent vitelline veins and the sinus venosus.
All patients with isolated atrial septal defect (ostium secundum, ostium primum and sinus venosus with or without partial anomalous pulmonary venous connection) were included.
A transesophageal echocardiogram demonstrated a sinus venosus atrial septal defect measuring approximately 20 mm in diameter (Figure 2).
5 days after conception, cells from an embryonic cardiac structure called the sinus venosus, which directs blood into the developing heart, began to migrate across the surface of the muscle.
4) These veins form a plexus around the duodenum before entering the sinus venosus (Fig.
The muscle sheath may represent a remnant of the sinus venosus (Gerlis et al.