medical MCQs – Page 248

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

4941. Oxygen dissociation cure is shifted to the right in all except_____________?
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A. Rise in temperature

B. HbF

C. Fall in pH

D. Increase of 2, 3 3 DPG

4942. Diuresis is caused by______________?
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A. All of the above

B. Glycerol

C. Urea

D. Mannitol

4943. Histiocytes are_____________?
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A. Allergic cells

B. Leukocytes

C. Scavenger cells

D. Released in immunologic response

4944. Which of the following vitamins is necessary for maturation of blood precursor cells________________?
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A. Cyano cobalamine

B. Riboflavin

C. Vit- A

D. Thiamine

4945. AB blood group antigen are known as ________ factors?
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A. Landsteiner

B. Lutheran

C. Duffy

D. Rhesus

4946. Renin is released from the kidney in all except________________?
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A. Fall in the BP

B. Decrease in the concentration of sodium ions in the proximal tubules

C. Sympathetic stimulation

D. Decrease in the concentration of sodium ions in the distal tubules

4947. Which of the following statements about pulmonary surfactant is false ?
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A. It increases surface tension

B. It prevents collapse of smaller alveoli

C. It is secreted by Type II pneumocytes

D. It contains lecithin and sphingomyelin

4948. The percentage of body water is greater in_______________?
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A. Obese than in lean individuals

B. Male than in females

C. Children than in adult

D. old than in young objects

4949. The following electrodes are used to detect the muscle activity without pain_________________?
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A. Hook electrode

B. Surface electrode

C. Round electrode

D. Needle electrode

4950. Alveolar O2 tension is______________?
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A. Similar to venous O2 tension

B. Decreased by hyperventilation

C. Not affected by respiratory depression

D. Increased by hyperventilation

4951. Which of the following is not a vitamin K dependent procoagulant ?
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A. Factor IX

B. Factor VII

C. Factor XI

D. Factor II

4952. Which of the following represents most dangerous situation_____________?
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A. Rh ve mover, bearing her 1stRh + ve child

B. Rh+ ve mother, who is bearing 2nd Rh+ ve child

C. Rh+ ve mother, bearing her 1st Rh ve child

D. Rh+ ve mother, bearing her 2nd + ve child

4953. The most common problem with blood trans fusion_______________?
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A. Hypokalemia

B. Hemolytic reaction

C. Remission of disease

D. Metabolic acidosis

4954. Persons having anti- A and anti- B is agglutinins in their serum belong to which blood group_____________?
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A. O

B. AB

C. B

D. A

4955. Oxygen affinity is increased by all except_________________?
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A. Hypoxia

B. Alkalosis

C. Increased HbF

D. Hypothermia

4956. Bleeding time is prolonged in a person who_______________?
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A. Takes coumarin derivatives

B. Lacks factor VIII

C. Has liver disease

D. Takes large quantities of aspirin

4957. Increase in partial pressure of CO2 leading to release of oxygen to the tissues is________________?
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A. Breur effect

B. Haldane effect

C. Bohr effect

D. Hamburger effect

4958. primary cause of bleeding disorder in liver damage is due to______________?
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A. Lack of vitamin B

B. Decreased level of prothrombin

C. Lack of vitamin K

D. Platelet deficiency

4959. Regulated bone growth through puberty occurs through__________________?
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A. Ectophyeseal plates

B. Epiphyseal plates

C. Chondrophyseal plates

D. Endophyseal plates

4960. Contractile element in myofibril is_______________?
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A. H band

B. Sarcomere

C. Sarcoplasm

D. A line

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