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A member asked:
What is the purpose of the sinus venosus?
A doctor has provided 1 answer
Embryo: This is a transient anatomic structure that occurs during cardiac development. A form of atrial septal defect (10% of ASD) can involve imperfect maturation of the heart with pathologic communication between the right atrium (collector of deoxygenated blood from the body), vena cavae and pulmonary veins usually resulting in L to R shunt (oxygenated blood diverts to R side of heart).
Answered 3/15/2015
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