MO Physiology Most Important Topics 2026
The top 3 MO Physiology chapters (Blood and Immunity, Endocrine Physiology and Neurophysiology) carry about 50 percent of the 15 Physiology MCQs on the MO paper. All 9 chapters MO examines are ranked below, with the method stated in full under the table.
Estimated from the official MO syllabus weighting.
MO Physiology chapter frequency table
All 9 Physiology chapters on the MO syllabus, heaviest first. The subtopics under each chapter name are the ones it is most often examined on.
| # | Chapter | Est. MCQs | Share of Physiology | Priority |
|---|---|---|---|---|
| 1 | Blood and Immunity | 2.8 | 18.5% | Critical |
| 2 | Endocrine Physiology | 2.5 | 16.9% | Critical |
| 3 | Neurophysiology | 2.2 | 14.6% | Critical |
| 4 | Respiratory Physiology | 1.6 | 10.5% | Important |
| 5 | Gastrointestinal Physiology | 1.5 | 10.1% | Important |
| 6 | Cardiovascular Physiology | 1.5 | 9.8% | Important |
| 7 | Renal Physiology | 1.3 | 8.9% | Standard |
| 8 | Cell and General Physiology | 1.1 | 7.1% | Standard |
| 9 | Reproductive Physiology | 0.5 | 3.4% | Standard |
How this was worked out: No solved paper we hold examines Physiology, so nothing here is counted from past papers. The 15 Physiology MCQs on the MO paper are spread across the chapters in proportion to how much material each chapter carries in the syllabus. Use it as a study order, not as a prediction, and check the conducting body's own syllabus for the final word.
Top 9 most important Physiology topics for MO 2026
Blood and Immunity
CriticalBlood and Immunity is 18.5 percent of the MO Physiology paper and works out at roughly 2.8 MCQs on the paper.
Endocrine Physiology
CriticalEndocrine Physiology is 16.9 percent of the MO Physiology paper and works out at roughly 2.5 MCQs on the paper.
Neurophysiology
CriticalNeurophysiology is 14.6 percent of the MO Physiology paper and works out at roughly 2.2 MCQs on the paper.
Respiratory Physiology
ImportantRespiratory Physiology is 10.5 percent of the MO Physiology paper and works out at roughly 1.6 MCQs on the paper.
Gastrointestinal Physiology
ImportantGastrointestinal Physiology is 10.1 percent of the MO Physiology paper and works out at roughly 1.5 MCQs on the paper.
Cardiovascular Physiology
ImportantCardiovascular Physiology is 9.8 percent of the MO Physiology paper and works out at roughly 1.5 MCQs on the paper.
Renal Physiology
StandardRenal Physiology is 8.9 percent of the MO Physiology paper and works out at roughly 1.3 MCQs on the paper.
Cell and General Physiology
StandardCell and General Physiology is 7.1 percent of the MO Physiology paper and works out at roughly 1.1 MCQs on the paper.
Reproductive Physiology
StandardReproductive Physiology is 3.4 percent of the MO Physiology paper and works out at roughly 0.5 MCQs on the paper.
Every Physiology chapter on the MO syllabus
437 free Physiology MCQs across 9 chapters, every answer explained.
MO Physiology most important topics: frequently asked questions
What are the most important Physiology topics for MO 2026?
The highest-value MO Physiology chapters are Blood and Immunity (about 2.8 MCQs), Endocrine Physiology (about 2.5 MCQs), Neurophysiology (about 2.2 MCQs), Respiratory Physiology (about 1.6 MCQs) and Gastrointestinal Physiology (about 1.5 MCQs). Together they account for 71 percent of the 15 Physiology MCQs on the MO paper. The ranking is derived rather than counted from MO papers; the method is stated in full on this page.
How many Physiology MCQs are on the MO paper?
Physiology is worth 15 MCQs on the MO paper as set by Public Service Commissions, spread across 9 chapters. This page ranks all 9 of them by how many of those MCQs each chapter is worth.
Are these MO Physiology numbers counted from past papers?
No. No solved paper on TestUstad examines Physiology, so nothing here is a count. The 15 Physiology MCQs on the MO paper are spread across the chapters in proportion to how much material each chapter carries in the syllabus. Treat it as a sensible study order and confirm against Public Service Commissions's own syllabus.
Should I skip the low-priority Physiology chapters for MO?
No. Every chapter in this table appears on the MO paper, and MO is decided by a handful of marks. A chapter marked Standard still costs you the marks you drop on it. Use this ranking to decide the order you study in and how long you spend on each chapter, not to cut chapters out.
Where can I practise these MO Physiology chapters?
Every chapter on this page links to its own free Physiology MCQs on TestUstad, 437 questions across the 9 chapters MO examines. Practice is free and unlimited with no account, and every question carries a written explanation of why the correct option is correct.