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[MBBS 0824] AUGUST 2024 Sub. Code: 6053
M.B.B.S. DEGREE EXAMINATION
(For the candidates admitted from the Academic Year 2020 -2021 Onwards)
FIRST YEAR ? (CBME)
PAPER I ? PHYSIOLOGY
Q.P. Code: 526053
Time: 20 Minutes Maximum: 20 Marks
Answer All Questions
Choose one correct answer in the box provided in the Answer Script.
No overwriting should be done. Choice should be given in Capital Letters.
III. Multiple Choice Questions: (20 x 1 = 20)
1. Positive feedback mechanism is seen
A) Secretion of insulin by blood glucose B) Secretion of thyroxin by TSH
C) LH surge D) Regulation of blood pressure
2. Diffusion rate depends on all EXCEPT
A) Concentration gradient B) Surface area of membrane
C) Thickness of membrane D) Temperature
3. Thiosulphate is used to measure the volume of
A) Blood B) Extracellular fluid C) Intracellular fluid D) Total body water
4. Group B nerve fibers are more susceptible to
A) Hypoxia B) Temperature C) Pressure D) Local anaesthetics
5. A 45-year-old woman complains of muscle weakness which becomes worse during
activity and improved by rest. She may be suffering from
A) Parkinson disease B) Lambert-Eaton syndrome
C) Myasthenia gravis D) Muscular dystrophy
6. Aspirin in low dose prevents myocardial infarction by
A) Retracting the blood clot B) Inhibiting platelets aggregation
C) Preventing platelet adhesion D) Initiating platelets activation
7. Opsonization and phagocytosis of bacteria is carried out by
A) C3a B) C3b C) C5a D) C6
8. A 30-year-old Rh-ve mother delivered her second child (Rh+ve) with signs of
jaundice, anaemia, edema, and kernicterus. What will be your diagnosis?
A) Erythroblastosis fetalis B) Obstructive jaundice
C) Fanconi anaemia D) Thalassemia
9. Trypsinogen is converted to trypsin by the action of
A) Pepsin B) HCL C) Enterokinase D) Chymotrypsin
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10. Myenteric plexus is present in
A) Between longitudinal and circular muscles
B) Mucosa
C) Submucosa
D) Serosa
11. Frequency of slow waves in stomach is
A) 3/minute B) 10/minute C) 15/minute D) 18/minute
12. Which of the following causes relaxation of the mesangial cell?
A) Histamine B) Norepinephrine C) Endothelins D) Dopamine
13. Macula densa in kidney is located in
A) PCT B) DCT C) Afferent Arteriole D) Efferent Arteriole
14. Spastic neurogenic bladder is seen in
A) Spinal cord transection B) Deafferentation
C) Denervation D) Bladder tumor
15. Which of the following hormone acts in the cell nucleus?
A) GnRH B) FSH C) Insulin D) Thyroid
16. Which one of the following is the clinical feature of acromegaly?
A) Height increases B) Protrusion of lower jaw
C) Height decreases D) Small tongue
17. Wolff ?Chaik off effect is due to
A) Suppression of TSH secretion B) Decreased iodination of MIT
C) Decreased T3 to T4 conversion D) Large iodine intake
18. Capacitation of spermatozoa takes place in
A) Seminiferous tubules B) Epididymis
C) Female genital tract D) Vas deferens
19. Which hormone causes milk ejection from breast during breastfeeding?
A) Prolactin B) Oxytocin C) Progesterone D) Estrogen
20. Fern pattern of cervical mucus is due to
A) Estrogen B) Progesterone C) Oxytocin D) Prolactin
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[MBBS 0824]
This post was last modified on 30 November 2024