MBBS DEGREE EXAMINATION - 1st PROF PROFESSIONAL REGULAR
EXAM - AUGUST 2024
PHYSIOLOGY - PAPER - I
SECTION A - Multiple Choice Questions (MCQs)
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PAPER CODE: 2411130002SET: C
Note: Choose one correct answer in the OMR sheet provided. No overwriting
should be done.
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Time: 20 Minutes (20 x 1 = 20 MARKS)1 Major contributor of Plasma osmolality is:
a) Plasma Proteins
b) Glucose c
c) Sodium Ion
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d) Urea2 Nerve growth factor in brain is synthesized by:
a) Microglia
b) Oligodendrocytes
c) Fibrous Astrocytes
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d) Protoplasmic Astrocytes3 Gibbs-Doman effect is seen on the distribution of:
a) Diffusible ions
b) Non-diffusible ions
c) Protein
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d) Osmotically active particles4 Which nerve fibre carries fast pain?
a) Type Ac Fibres
b) Type Ag Fibres
c) Type A6 Fibres
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d) Type C Fibres5 Gastric acid secretion is inhibited by:
a) Histamine
b) Gastrin
e) Gastrin
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f) Secretinb) Vagal stimulation
6. Which of the following DOES NOT affect motility of
a) Gastrin
b) Secretin
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c) Cholecystokinind) Ghrelin
7 Molecular Motors are:
a) Myosin and Myoglobin
b) Dynein and Kinesin
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e) 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
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b) Fatsc) Amino acids
d) Ketones
9 Which of the following change is seen in emphysema?
a) Increased Total Lung Capacity
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b) Decreased Residual Volumec) Increased FEV1
d) Increased Vital Capacity
10 Stability of alveoli is maintained by:
a) Residual air
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b) Surface tensionc) Positive Intrapleural pressure
d) Negative Intrapleural pressure
11 "Oxygenation of hemoglobin lowers its affinity for carbondioxide" is called:
a) Bohr effect
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b) Bainbridge effectc) Hering Breur effect
d) Haldane effect
12 Which is the best parameter for analysis of Hypoxic hypoxia?
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a) Arterial pO2b) Arterial pCO2
c) Venous pO2
d) A-V pO2 difference
13 Preload of the heart is determined by:
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a) Stroke Volumeb) End diastolic volume
c) End systolic volume
d) Systemic vascular resistance
14 First reactive change after hemorrhage is:
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a) Increased Cortisol levelsb) Increased Catecholamine levels
c) Vasoconstriction
d) Tachycardia
15 Independent P wave and QRS complex indicates:
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a) Depression of SA nodeb) Early ventricular repolarization
e) Slowing of conduction at AV Node
d) Failure of conduction at AV Node
16 First heart sound occurs in:
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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?
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a) Kupfer Cellb) Mast Cell
c) Microglia
d) Alveolar macrophages
18 Antibodies which can easily cross the placenta:
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a) IgAb) Ig E
c) Ig G
d) Ig M
19 Conjugation of Bilirubin occurs in:
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a) Erythrocyteb) Lymphocyte
c) Pneumocyte
d) Hepatocyte
20 Maximum water absorption in the GIT occurs in:
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a) Stomachb) Ileum
c) Jejunum
d) Colon
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