Physiology Paper-1 (Main), 2023 MBBS Batch ABVMU Lucknow

MBBS DEGREE EXAMINATION - 1ST PROFESSIONAL-REGULAR EXAM - AUGUST - 2024
PHYSIOLOGY - PAPER I
SECTION A - Multiple Choice Questions (MCQs)
SET: A
Time: 20 Minutes
PAPER CODE: 2411130002

Note: Choose one correct answer in the OMR sheet provided. No overwriting should be done.
(20 x 1 = 20 MARKS)

MBBS DEGREE EXAMINATION - 1ST PROFESSIONAL-REGULAR EXAM - AUGUST - 2024
PHYSIOLOGY - PAPER I
SECTION A - Multiple Choice Questions (MCQs)
SET: A
Time: 20 Minutes
PAPER CODE: 2411130002

Note: Choose one correct answer in the OMR sheet provided. No overwriting should be done.
(20 x 1 = 20 MARKS)

1. Major contributor of Plasma osmolarity is:
   a) Plasma Proteins
   b) Glucose
   c) Sodium Ion
   d) Urea

2. Nerve growth factor in brain is synthesized by:
   a) Microglia
   b) Oligodendrocytes
   c) Fibrous Astrocytes
   d) Protoplasmic Astrocytes

3. Gibbs-Donnan effect is seen on the distribution of:
   a) Diffusible ions
   b) Non-diffusible ions
   c) Proteins
   d) Osmotically active particles

4. Which nerve fibre carries fast pain?
   a) Type Aα Fibres
   b) Type Aβ Fibres
   c) Type Aδ Fibres
   d) Type C Fibres

5. Gastric acid secretion is inhibited by:
   a) Histamine
   b) Gastrin
   c) Secretin
   d) Vagal stimulation

6. Which of the following DOES NOT affect motility of the stomach?
   a) Gastrin
   b) Secretin
   c) Cholecystokinin
   d) Ghrelin

7. Molecular Motors are:
   a) Myosin and Myoglobin
   b) Dynein and Kinesin
   c) Calmodulin and G Proteins
   d) Troponin I and C

8. Which of the following provides around 60% energy to the heart in basal condition?
   a) Carbohydrates
   b) Fats
   c) Amino acids
   d) Ketones

9. Which of the following change is seen in emphysema?
   a) Increased Total Lung Capacity
   b) Decreased Residual Volume
   c) Increased FEV1
   d) Increased Vital Capacity

10. Stability of alveoli is maintained by:
    a) Residual air
    b) Surface tension
    c) Positive Intrapleural pressure
    d) Negative Intrapleural pressure

11. "Oxygenation of hemoglobin lowers its affinity for carbon dioxide" is called:
    a) Bohr effect
    b) Bainbridge effect
    c) Hering-Breuer effect
    d) Haldane effect

12. Which is the best parameter for analysis of Hypoxic hypoxia?
    a) Arterial pO₂
    b) Arterial pCO₂
    c) Venous pO₂
    d) A-V pO₂ difference

13. Preload of the heart is determined by:
    a) Stroke Volume
    b) End diastolic volume
    c) End systolic volume
    d) Systemic vascular resistance

14. First reactive change after hemorrhage is:
    a) Increased Cortisol levels
    b) Increased Catecholamine levels
    c) Vasoconstriction
    d) Tachycardia

15. Independent P wave and QRS complex indicates:
    a) Depression of SA node
    b) Early ventricular repolarization
    c) Slowing of conduction at AV Node
    d) Failure of conduction at AV Node

16. First heart sound occurs in:
    a) Isotonic relaxation phase
    b) Isotonic contraction phase
    c) Isovolumetric relaxation phase
    d) Isovolumetric contraction phase

17. Which of the following is NOT a derivative of Monocytes?
    a) Kupffer Cells
    b) Mast Cell
    c) Microglia
    d) Alveolar macrophages

18. Antibody which can easily cross the placenta:
    a) Ig A
    b) Ig E
    c) Ig G
    d) Ig M

19. Conjugation of Bilirubin occurs in:
    a) Erythrocyte
    b) Lymphocyte
    c) Pneumocyte
    d) Hepatocyte

20. Maximum water absorption in the GIT occurs in:
    a) Stomach
    b) Ileum
    c) Jejunum
    d) Colon

MBBS DEGREE EXAMINATION - 1st PROFESSIONAL-REGULAR EXAM - AUGUST, 2021
PHYSIOLOGY - PAPER - I
TIME: 3 Hrs
Max. Marks: 100 Marks (80 Theory + 20 MCQs)

NOTE:

• Attempt all questions.

• This question paper consists of two sections: Section A - Multiple Choice Questions and Section B - Theory Questions.

• Both the sections have different paper codes. Write the correct paper code on the respective sheet.

• Write the correct MCQ paper set on the OMR sheet.

• Write answers for MCQs on the provided OMR sheet and theory questions on the provided answer booklet.

SECTION B - THEORY QUESTIONS
PAPER CODE: 2411230002

Q.1 Long Answer Questions 15 MARKS

• Define blood pressure. (3 marks)

• Enumerate factors affecting blood pressure. (5 marks)

• Explain the long-term mechanisms for the regulation of blood pressure. (7 marks)

Q.2 Clinical Case Scenario based Structured Question (15 MARKS)

A 32-year-old female, 28 weeks in her third pregnancy, visits the Obstetrics OPD with complaints of dizziness, palpitation, breathlessness on exertion, and easy fatiguability. On examination, she appears pale, malnourished with spoon-shaped nails, and pitting edema is present over ankles. Investigations show:

• Hb: 8 gm%

• RBC Count: 3.4 Million/Cu.mm

1. What are the likely findings on a blood smear? (3 marks)

2. Which additional investigations would you like to perform and why? (4 marks)

3. Explain the physiological basis of anemia in pregnancy. (3 marks)

4. Describe the factors affecting erythropoiesis. (5 marks)

Q.3 Short Note Question (Approx 500 Words) 5 X 6 = 30 MARKS

1. Enterohepatic circulation of bile salts.

2. Passive transport mechanisms.

3. Differences between skeletal and smooth muscle contraction.

4. Non-respiratory functions of lungs.

5. Role of pancreatic enzymes in digestion of food.

Q.4 Short Answer Questions (Within 100 Words) 5 X 4 = 20 MARKS

• Mechanism of saltatory conduction.

• Intrinsic pathway of blood coagulation.

• Phases of deglutition.

• Frank-Starling law of the heart.

• Define cardiac output. What are the different methods to measure it?

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