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Take a quiz of me on abvmu style paper 1 of physiology

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ABVMU MBBS first year physiology paper 1 question paper pattern marks scheme

I have enough context. The ABVMU Paper 1 Physiology covers: Blood, CVS, Respiratory, Renal, and GIT. The standard ABVMU theory paper pattern is:
  • Section A: 10 MCQs (1 mark each) = 10 marks
  • Section B: 2 Long Answer Questions (10 marks each) = 20 marks
  • Section C: Short Answer Questions (typically 5 x 5 marks each) = 25 marks
  • Section D: Case-based / Applied questions = 5-10 marks (varies)
Total = ~60-80 marks theory (sometimes scaled to 100)

ABVMU Style - Physiology Paper 1

Time: 3 Hours | Maximum Marks: 60

Instructions: Attempt all sections. Draw diagrams wherever applicable.

SECTION A - Multiple Choice Questions (10 x 1 = 10 Marks)

Choose the single best answer. Answer all 10 questions before I give feedback.
Q1. The normal osmolarity of plasma is:
  • A) 150 mOsm/L
  • B) 285-295 mOsm/L
  • C) 310-320 mOsm/L
  • D) 450 mOsm/L
Q2. Which of the following statements about Erythropoietin (EPO) is CORRECT?
  • A) It is primarily produced by the liver in adults
  • B) It acts on mature RBCs to prolong their lifespan
  • C) It stimulates differentiation of CFU-E into proerythroblasts
  • D) Its secretion is decreased in response to hypoxia
Q3. The "intrinsic factor" essential for Vitamin B12 absorption is secreted by:
  • A) Chief cells of stomach
  • B) Parietal cells of stomach
  • C) Cells of Brunner's glands
  • D) Enterochromaffin cells
Q4. A patient has a pulmonary capillary wedge pressure (PCWP) of 22 mmHg. This finding is MOST consistent with:
  • A) Right heart failure
  • B) Left heart failure
  • C) Hypovolemic shock
  • D) Pulmonary embolism
Q5. The JG cells (juxtaglomerular cells) that secrete renin are modified:
  • A) Macula densa cells
  • B) Smooth muscle cells of afferent arteriole
  • C) Mesangial cells
  • D) Podocytes
Q6. In the Frank-Starling law of the heart, the term "preload" refers to:
  • A) Aortic pressure at the time of ejection
  • B) End-diastolic ventricular volume / fiber length
  • C) Total peripheral resistance
  • D) Peak systolic pressure in the ventricle
Q7. Hypoxic pulmonary vasoconstriction (HPV) is a response that:
  • A) Increases blood flow to poorly ventilated lung regions
  • B) Decreases V/Q mismatch by directing blood away from poorly ventilated alveoli
  • C) Is mediated primarily by the sympathetic nervous system
  • D) Is the same mechanism as seen in systemic circulation
Q8. Which of the following is an anticoagulant mechanism present NORMALLY in blood?
  • A) Thromboxane A2
  • B) Protein C - Protein S system
  • C) von Willebrand factor
  • D) Tissue factor (Factor III)
Q9. In chronic renal failure, the MOST common acid-base disorder is:
  • A) Metabolic alkalosis
  • B) Respiratory acidosis
  • C) Metabolic acidosis
  • D) Respiratory alkalosis
Q10. The oxygen-hemoglobin dissociation curve shifts to the RIGHT in:
  • A) Decreased PCO2
  • B) Decreased temperature
  • C) Alkalosis
  • D) Increased 2,3-DPG (2,3-bisphosphoglycerate)

SECTION B - Long Answer Questions (2 x 10 = 20 Marks)

Attempt BOTH questions.
Q11. Describe the Cardiac Cycle in detail. Include:
  • (a) Events occurring during systole and diastole (4 marks)
  • (b) Pressure-volume changes in the ventricle with a diagram (4 marks)
  • (c) Heart sounds - their origin and significance (2 marks)
Q12. Explain the Regulation of Respiration. Include:
  • (a) Respiratory centers in the brainstem and their roles (3 marks)
  • (b) Role of central and peripheral chemoreceptors (4 marks)
  • (c) Hering-Breuer reflex and its significance (3 marks)

SECTION C - Short Answer Questions (5 x 5 = 25 Marks)

Attempt ANY FIVE.
Q13. Describe the composition and functions of bile. How is bile secretion regulated?
Q14. Explain the countercurrent multiplier mechanism in the loop of Henle and its role in urine concentration.
Q15. What is anemia? Classify it and describe the physiological compensatory mechanisms in anemia.
Q16. Describe the coagulation cascade (intrinsic and extrinsic pathways) with a diagram.
Q17. Explain the Renin-Angiotensin-Aldosterone System (RAAS) and its role in blood pressure regulation.
Q18. What are surfactants? Describe their composition, function, and consequences of surfactant deficiency.
Q19. Describe the absorption of iron in the gastrointestinal tract.

SECTION D - Applied / Case-Based Question (1 x 5 = 5 Marks)

Q20. A 65-year-old male smoker presents with chronic cough, progressive breathlessness, and barrel-shaped chest. His spirometry shows FEV1/FVC ratio of 0.58 and residual volume is markedly increased.
  • (a) What is the likely diagnosis? (1 mark)
  • (b) Explain the physiological basis of the spirometry findings. (2 marks)
  • (c) What arterial blood gas (ABG) abnormality would you expect in advanced disease and why? (2 marks)
Total: 60 Marks
How to proceed:
  • For MCQs (Q1-Q10): Type your answers (e.g., A1-B, A2-C...) and I will score and explain all 10.
  • For Long/Short answers: Attempt one question at a time and I will give feedback, marks, and the model answer.
  • Or say "give me answers" to see the answer key and explanations directly.
Which section would you like to start with?
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