What is the function of the sinus venosus in the frog's heart?

What is the function of the sinus venosus in the frog's heart?
  1. It helps pump blood to the ventricle
  2. It receives blood through the major veins
  3. It helps regulate blood flow to the kidneys
  4. It connects the atria and ventricle

Solution

The sinus venosus is a triangular structure that joins the right atrium, and it receives blood through the major veins called vena cava.

Asked in: NCERT

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