Body Fluids and Circulation — NEET/JEE Questions, Notes & Weightage
Class 11 Human Physiology NEET weightage: Very High 3,670 questions
Covers blood composition, blood groups, the heart (structure, cardiac cycle, ECG), and the lymphatic system. The cardiac cycle sequence and ECG-wave identification (P, QRS, T) are among the most consistently tested topics in all of NEET Biology.
Practice all 3,670 Body Fluids and Circulation questions →Topics inside Body Fluids and Circulation
blood
1,376
Heart and Cardiac Cycle
1,367
Blood Vessels
295
Circulatory Disorders
219
Lymph
176
E a
4
Human Heart
3
Human Circulatory System
3
Blood Groups
2
Circulatory Pathways
2
Blood Cells And Functions
2
Blood Clotting
2
Regulation Of Cardiac Activity
1
Circulation In Vertebrates Frog
1
wbc
1
Blood Coagulation
1
Frequently asked questions
What is the single highest-yield topic in this chapter?
The cardiac cycle (systole/diastole sequence, timing, and associated heart sounds) combined with ECG wave identification — together these recur in nearly every NEET paper.
Are blood group / blood clotting questions common?
Yes, especially ABO and Rh blood grouping (compatibility, antigens/antibodies) and the basic clotting-factor cascade sequence.
Should I memorise exact cardiac cycle timings?
Knowing the relative duration of systole vs diastole and total cycle time (~0.8s) is worth memorising precisely, since NEET has asked numeric/timing-based questions on this directly.