In humans,the sinus venosus is considered to | vedclass

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(A) In the embryonic development of the human heart,the sinus venosus is a primitive structure that receives venous blood. During the process of heart

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Right atrium

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(A) In the embryonic development of the human heart,the sinus venosus is a primitive structure that receives venous blood. During the process of heart development,the sinus venosus gets incorporated into the wall of the right atrium. This incorporation forms the smooth-walled part of the right atrium,known as the sinus venarum,while the original embryonic right atrium forms the pectinate muscles. Therefore,the sinus venosus merges with the right atrium.

In humans,the sinus venosus is considered to have merged with the wall of which chamber?

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