Opening of AV valves is caused by:
The correct answer is B: Atrial pressure > ventricular pressure. In Cardiac Cycle and Regulation, this idea is central because it matches how the body actually works in everyday teaching examples. Put simply, cause and effect line up with Atrial pressure > ventricular pressure — that is the mechanism or reason the stem is pointing to. That is why Atrial pressure > ventricular pressure is the option that holds up when you check it against basic physiology. When you revise, say the answer out loud with one short reason attached; that sticks better than rote lists. Remember that physiology questi
Ref: Animal physiology is Unit 7 of the CSIR NET Life Science Syllabus, covering core body systems. It accounts for roughly 10% of the total marks in Sections B and C.