Analyse the two statements and choose the correct option:
 
Note: For some questions, more than one answer is right.
 
1. Statement 1: In heart, pericardial cavity is filled with the aqueous pericardial fluid.

Statement 2: The pericardial fluid shields the heart from damage from the outside environment.
 
2.
Statement 1:Tricuspid valve is also called as mitral valve.

Statement 2: Both auricles open into the ventricle through a common aperture called auriculo-ventricular aperture.