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[MBBS 0924] SEPTEMBER 2024 Sub. Code: 6053
M.B.B.S. DEGREE EXAMINATION
(For the candidates admitted from the Academic Year 2020 -2021 Onwards)
FIRST PROFESSIONAL ? (CBME) - SUPPLEMENTARY
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. Which of the following methods is NOT used for measurement of body fluid measurement?
A) Antipyrine for total body water B) Inulin for extracellular fluid
C) Evans blue for plasma volume D) 125I-albumin for blood volume
2. Depolarisation stage of action potential characterized by:
A) Influx of positive ions into the cell
B) Diffusion of potassium ions out of the cells
C) Cell membrane potential return to the resting state
D) Cell membrane respond to subthreshold stimulus
3. The type of membrane junction that plays role in electrical conductivity of cardiac cells is
A) Tight junction B) Gap junction C) Desmosomes D) Pacemaker cells
4. In muscle contraction all are true EXCEPT
A) A band remains unchanged B) H Zone disappears
C) I band becomes wider D) Two Z lines come closer
5. Which of the following is a presynaptic blocking agent?
A) D- tubocurarine B) Succinylcholine C) Botulinium toxin D) Physostigmine
6. All are calcium binding proteins EXCEPT
A) Calbindin B) Calmodulin C) Tropomyosin D) Troponin
7. Blood group antigens are
A) Transmitted by sex chromosomes B) Attached to plasma globulin
C) Found in sweat D) Found in saliva
8. Deficiency of vitamin K leads to decreased activity of:
A) Platelets B) Coagulation factors V and VIII
C) Coagulation factors VII, IX and X D) Fibrinolytic system
9. All of the following are steps of phagocytosis EXCEPT
A) Chemotaxis B) Oposonization C) Antigen presentation D) Diapedesis
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10. Which of the following is NOT a liver function test?
A) Blood urea B) Serum Bilirubin
C) Serum albumin D) Aspartate Transaminase
11. Which of the following statement is FALSE
A) Meissner's plexus is responsible for gastrointestinal motility
B) Auerbach's plexus is present in the muscular layer
C) Sympathetic nerves inhibit the nervous system and decrease the motility
D) Parasympathetic system is responsible for watery secretion
12. All of the following are functions of Secretin EXCEPT
A) Increases the secretion of pancreatic juice rich in bicarbonate
B) Increases alkaline bile secretion
C) Causes contraction of pyloric sphincter
D) Causes contraction of gallbladder
13. Which of the following is used to measure renal plasma flow?
A) Inulin B) Para Amino Hippuric acid C) Mannitol D) D2O
14. In syndrome of Inappropriate Anti Diuretic Hormone (SIADH) secretion
A) ADH secretion is increased despite hyperosmolality
B) ADH secretion is increased despite hypoosmolality
C) ADH secretion is increased despite iso osmolality
D) ADH secretion is decreased despite hypoosmolality
15. Somatomedin deficiency causes
A) Pituitary dwarf B) Laron dwarf C) Hypothyroid dwarf D) African pygmies
16. Cortisol exhibits anti-inflammatory effect by
A) Increasing the capillary permeability
B) Stabilizing the lysosomal membrane
C) Increasing the migration of white blood cells
D) Increasing the release of interleukin-1 from white blood cells
17. An increase in 24hr urinary excretion of vanillylmandelic acid is characteristic feature of
A) Pheochromocytoma B) Addison's disease
C) Cushing's syndrome D) Hyperaldosteronism
18. Differentiation of external genitalia in males requires
A) Dihydrotestosterone B) 5- alpha- reductase C) Testosterone D) Aromatase 3
19. All of the following endocrine related changes occur during pregnancy EXCEPT:
A) Decreased secretion of thyroxine B) Increased secretion of glucocorticoids
C) Increased secretion of Aldosterone D) Increased secretion of parathormone
20. Placental hormone which reduces the possibility of fetal rejection is
A) Progesterone B) Estrogen C) Relaxin D) Human Chorionic Gonadotrophin
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[MBBS 0924]
This post was last modified on 30 November 2024