What is correct about sinus venosus

Options

A. It is situated on dorsal surface of rabbit heart
B. It is situated ventrally in frog heart
C. It sends blood to dorsal aorta
D. It opens into right auricle

Answer

D

Explanation

Sinus venosus carry deoxygenated blood from all part of body and part into right auricle. It is present on the dorsal surface of heart, two precaval and two post caval fused to form wide chamber called sinus venosus.