NEET · Biology · Body Fluids & Circulation doubts
10 doubts found
What does “Double circulation” actually mean in Body Fluids & Circulation, and why does it matter for NEET?
blood passes through the heart twice in one complete circuit — once to the lungs, once to the body.
I keep getting “Double circulation” questions wrong in Body Fluids & Circulation. What's the trap?
thinking humans have single circulation like fish.
What does “Heart chambers” actually mean in Body Fluids & Circulation, and why does it matter for NEET?
four chambers — two atria and two ventricles — keep oxygenated (left) and deoxygenated (right) blood separate.
I keep getting “Heart chambers” questions wrong in Body Fluids & Circulation. What's the trap?
mixing up which side carries oxygenated blood.
What does “Blood components” actually mean in Body Fluids & Circulation, and why does it matter for NEET?
plasma (fluid), red cells (carry O₂), white cells (defence) and platelets (clotting).
I keep getting “Blood components” questions wrong in Body Fluids & Circulation. What's the trap?
thinking white cells carry oxygen.
What is the difference between artery and vein?
Arteries carry blood away from the heart under high pressure with thick walls; veins return blood to the heart at low pressure and have valves.
What is the difference between RBC and WBC?
Red blood cells carry oxygen (no nucleus in humans); white blood cells defend against infection (have a nucleus).
What is the difference between systole and diastole?
Systole is heart-muscle contraction (pumping blood out); diastole is relaxation (chambers refill).
How is Body Fluids & Circulation tested in NEET, and what should I focus on?
Prioritise the core ideas: Double circulation, Heart chambers, Blood components.