Zoology10–12 questions per year (~12% of Biology)

NEET Human Physiology.

Digestive, respiratory, circulatory, excretory, nervous, and endocrine systems. The single highest-weightage Biology chapter.

Human Physiology is the most heavily-tested chapter in NEET Biology. Every year you can expect 10–12 questions across the major systems: digestion (enzyme action, absorption), breathing (transport of gases, lung volumes), circulation (cardiac cycle, ECG, BP regulation), excretion (nephron, glomerular filtration, hormones), nervous system (neuron, reflex arcs, brain), and endocrine (hormone-gland-target table).

NCERT chapters to cover

  • 📘Class 11 Ch 16: Digestion and Absorption
  • 📘Class 11 Ch 17: Breathing and Exchange of Gases
  • 📘Class 11 Ch 18: Body Fluids and Circulation
  • 📘Class 11 Ch 19: Excretory Products and their Elimination
  • 📘Class 11 Ch 20: Locomotion and Movement
  • 📘Class 11 Ch 21: Neural Control and Coordination
  • 📘Class 11 Ch 22: Chemical Coordination and Integration

Exam tips

  • 1Make a hormone table: gland, hormone, target, function, deficiency, excess. Memorize cold.
  • 2Cardiac cycle: P-wave (atrial depolarization), QRS (ventricular depolarization), T (ventricular repolarization).
  • 3Nephron: glomerular filtration (~125 mL/min), then selective reabsorption in PCT, loop of Henle, DCT, collecting duct.
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FAQ

How many Human Physiology questions come in NEET?
Based on NEET past papers from 2018–2025, Human Physiology typically delivers 10–12 questions per year (~12% of Biology).
Which NCERT chapters cover Human Physiology?
For NEET Human Physiology, study Class 11 Ch 16: Digestion and Absorption; Class 11 Ch 17: Breathing and Exchange of Gases; Class 11 Ch 18: Body Fluids and Circulation; Class 11 Ch 19: Excretory Products and their Elimination; Class 11 Ch 20: Locomotion and Movement; Class 11 Ch 21: Neural Control and Coordination; Class 11 Ch 22: Chemical Coordination and Integration.
What's the best way to prepare Human Physiology for NEET?
Make a hormone table: gland, hormone, target, function, deficiency, excess. Memorize cold. Cardiac cycle: P-wave (atrial depolarization), QRS (ventricular depolarization), T (ventricular repolarization).

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