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
2,282
Heart and Cardiac Cycle
1,333
Blood Vessels
292
Circulatory Disorders
219
Circulatory Pathways
199
Lymph
172
Double Circulation
39
Regulation Of Cardiac Activity
17
Lymph (Tissue Fluid)
8
E a
3
Human Heart
3
Blood Groups
2
Blood Cells And Functions
2
Human Circulatory System
2
Circulation In Vertebrates Frog
1
wbc
1
Blood Coagulation
1
Disorders of Circulatory System
1
Blood Clotting
1
Cardiac Cycle
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.