Body Fluids and Circulation — NEET/JEE Questions, Notes & Weightage
Class 11 Human Physiology NEET weightage: Very High 1,589 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 1,589 Body Fluids and Circulation questions →Topics inside Body Fluids and Circulation
blood
573
Circulatory Pathways
537
Double Circulation
126
Disorders of Circulatory System
122
Lymph (Tissue Fluid)
75
Regulation Of Cardiac Activity
51
15-1-blood
24
15-3-circulatory-pathways
22
Cardiac Cycle
13
Human Circulatory System
9
formed-elements
8
circulation
7
circulatory-disorders-and-blood-pressure
5
Electrocardiogram
4
Blood Groups
3
Blood Vessels
2
Blood Coagulation
2
Lymph
2
15-6-disorders-of-circulatory-system
2
Human Heart
2
blood-and-cardiac-cycle
1
Male Reproductive system
1
15-2-lymph-tissue-fluid
1
15-4-double-circulation
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.