(A) Sinus venosus ()
(B) Right atrium (X)
(C) Left atrium (X)
(D) Conus arteriosus (X)
Answers: Deoxygenated blood first enters in sinus venosus part in fishes.
(A) Sinus venosus ()
(B) Right atrium (X)
(C) Left atrium (X)
(D) Conus arteriosus (X)
Answers: Deoxygenated blood first enters in sinus venosus part in fishes.
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