Physiology Paper-1 (Main), 2022 MBBS Batch ABVMU Lucknow

ATAL BIHARI VAJPAYEE MEDICAL UNIVERSITY, LUCKNOW
MBBS DEGREE EXAMINATION - 1st PROFESSIONAL - NOV. - 2023
PHYSIOLOGY - PAPER - I

SECTION A - Multiple Choice Questions (MCQs)

PAPER CODE: 2311130002
SET: D

Note: Choose one correct answer in the OMR sheet provided. No overwriting should be done.

Time: 20 Minutes
(20 × 1 = 20 MARKS)

• 1. In a situation where the respiratory bronchioles become inflamed and narrowed, such as is seen in asthma, which aspect of respiration would be most mechanically impaired?
  a) Normal expiration
  b) Forced expiration
  c) Normal inspiration
  d) Forced inspiration

• 2. Intraventricular pressure is highest during which phase of the cardiac cycle?
  a) Protodiastole
  b) Atrial systole
  c) Before aortic and pulmonary valves are open
  d) Ventricular systole proper

• 3. Which of these periods represents greatest cardiac output?
  a) Ventricular diastole
  b) Ventricular systole
  c) Atrial diastole
  d) Atrial systole

• 4. Blood vessels which are highly elastic and distensible are:
  a) Capacitance vessels
  b) Windkessel vessels
  c) Shunt vessels
  d) Resistance vessels

• 5. Which of the following accessory organs produces a fluid to soften food?
  a) Salivary glands
  b) Gallbladder
  c) Teeth
  d) Liver

• 6. The systems that provide homeostasis are:
  a) Nervous system and Endocrine
  b) Cardiovascular and Integumentary
  c) Respiratory and muscular systems
  d) Cardiovascular and respiratory systems

• 7. Genesis of resting cell membrane potential is due to all except:
  a) Impermeable anions being inside the cell
  b) Presence of Na⁺ pump expelling Na⁺ from the cell
  c) Existence of Na⁺ pump expelling Na⁺ from the cell
  d) Existence of K⁺ pump transferring K⁺ into the cell

• 8. Intracellular fluid is rich in all except:
  a) Potassium
  b) Sodium
  c) Phosphate
  d) Magnesium

• 9. Which of the following processes is the primary function of the villi of the small intestine?
  a) Secretion
  b) Ingestion
  c) Absorption
  d) Mixing and propulsion

• 10. Which of the following is not recorded in ECG?
  a) Atrial repolarization
  b) Ventricular depolarization
  c) Atrial depolarization
  d) Ventricular repolarization

• 11. A man with blood group B cannot be the biological father of a child with an AB blood type if:
  a) The mother is type A
  b) The mother is type O
  c) The mother is type AB
  d) The mother is Rh-positive

• 12. Which of the following secrete gastric acid?
  a) Parietal cells
  b) Mucous cells
  c) Serosa cells
  d) Chief cells

• 13. Chemoreceptors in blood vessels measuring high levels of blood carbon dioxide would NOT cause which of the following?
  a) Increased vasoconstriction of blood vessels
  b) Increased heart rate
  c) Decreased respiratory rate
  d) Increased blood pressure

• 14. RBC count is less in young females compared to males of the same age because:
  a) Females are less active and less muscular than males
  b) Increased blood loss during menses
  c) Low thyroxine levels
  d) Oestrogens depresses the erythropoiesis

• 15. The longest living WBC is:
  a) Eosinophil
  b) Monocyte
  c) Lymphocyte
  d) Neutrophil

• 16. Which of the following is not an energy requiring process to move substances through the cell membrane?
  a) Carrier type processes
  b) Sodium potassium pump
  c) Osmosis
  d) Iodide pumps

• 17. Pneumotaxic centre is located in:
  a) Pneumotaxic centre
  b) Dorsal Group of Nucleus
  c) Apneustic centre
  d) Pre-Botzinger Complex

• 18. Spirometry can demonstrate and measure all of the following except:
  a) Residual Volume
  b) Expiratory Reserve Volume
  c) Tidal Volume
  d) Inspiratory Reserve Volume

• 19. Which of the following is NOT a function of the liver?
  a) Protein metabolism
  b) Bile synthesis
  c) Phagocytosis
  d) Storage of bilirubin

• 20. Carbon monoxide or oxygenated haemoglobin:
  a) Either reduced or oxygenated haemoglobin is exposed to oxidising agents
  b) CO₂ reacts with haemoglobin
  c) Oxygen has been removed from the haemoglobin
  d) Carbamino-haemoglobin is formed

ATAL BIHARI VAJPAYEE MEDICAL UNIVERSITY, LUCKNOW
MBBS DEGREE EXAMINATION - 1st PROFESSIONAL - NOV. - 2023
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.

• Answer MCQs on the provided OMR sheet and theory questions on the provided answer booklet.

SECTION B - THEORY QUESTIONS

PAPER CODE: 2311130002

Q.1 Long Answer Question (15 Marks)

Describe the different types of skeletal muscle proteins and the molecular basis of skeletal muscle contraction in detail with a suitable diagram.

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

A 38-year-old female suffered from malignancy of the stomach, and as a part of treatment, her stomach was removed.
After a few months, she developed symptoms of easy fatigue, breathlessness, tingling, and numbness in hands. She was pale in appearance.
Her blood report showed:

• RBC: 3 Million/cu.mm

• HB: 9 gm/dl

• MCV: Increased

• MCH: Increased

• MCHC: Normal

On giving intramuscular Vitamin B-12 injections, the patient started showing symptomatic improvement.

i) Identify the clinical condition. (2 marks)
ii) Explain how removal of the stomach leads to the above condition. (5 marks)
iii) How does Vitamin B-12 lead to an improvement in symptoms? (5 marks)
iv) Write the morphological classification of anaemia. (3 marks)

Q.3 Short Note Questions (Approx 500 Words) (5 × 6 = 30 Marks)

i) Role of chemoreceptors in regulation of respiration
ii) Decompression sickness
iii) Enterohepatic circulation of bile salts
iv) Classification of nerve fibres
v) Movements of the small intestine

Q.4 Short Answer Questions (Within 100 Words) (5 × 4 = 20 Marks)

i) Role of helper T cells in immunity
ii) Facilitated diffusion
iii) Myasthenia Gravis
iv) Conducting system of the heart
v) Functions of saliva

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