medical MCQs – Page 242

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 Review each marked answer and report any item that may be outdated or unclear.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

4821. Oxygen affinity decreases in_________________?
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A. Hypoxia

B. HbF

C. Hypothermia

D. Increased pH

4822. Thrombopoietin is produced by_________________?
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A. Megakaryoblast

B. Liver

C. Monocytes

D. Megakaryocyte

4823. In a blood sample antiserum A and antiserum B and Rh+ ve factor is added. No agglutination is seen. This is_______________?
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A. O group and Rh- ve

B. AB group and Rh ve

C. O group and Rh+ ve

D. AB group and Rh+ ve

4824. Activation of which one of the following coagulation factors is not essential for hemostasis________________?
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A. IX

B. XII

C. XI

D. X

4825. Differential white blood cell counts in the laboratory are useful in the diagnosis of_______________?
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A. Eosinophilia

B. Anemia

C. Vitamin deficiency

D. Spherocytosis

4826. Limitation of inspiration by vagal lung inflation signals is called the______________?
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A. Autonomic reflex

B. Herring Breur reflex

C. Bainbridge reflex

D. Dynamic stretch reflex

4827. The approximate amount of air left in the lungs after maximal forced expiration in a normal woman______________?
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A. 2.0 L

B. 1.8 L

C. 0.5 L

D. 1.1 L

4828. The renal threshold for glucose is_______________?
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A. 80 mg/dl

B. 120 mg/dl

C. 100 mg/dl

D. 180 mg / dl

4829. Iron is stored in_______________?
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A. All

B. RBC

C. Plasma

D. Reticule endothelial system

4830. Test for estimating kidney function is_______________?
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A. Inulin test

B. Insulin test

C. Serum phosphatase

D. Serum creatinine

4831. The number of muscle fibers in a motor unit are least in______________?
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A. Laryngeal muscles

B. Extraocular muscles

C. Muscles of middle ear

D. Pharyngeal muscles

4832. Megaloblasts are precursors of_____________?
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A. Myelocytes

B. Macrocytes

C. Norm oblasts

D. Megakaryocytes

4833. The function of plasma cell______________?
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A. Antibody formation

B. CMI

C. Phagocytosis

D. Opsonization

4834. The normal absolute eosinophil count is_____________?
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A. 1500 to 2,000cells/C.mm

B. 500 to 900 cells/C.mm

C. 1200 to1500cells/C.mm

D. 40 to 440 cells/C.mm

4835. A decrease in the urine output is called_____________?
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A. Dysuria

B. Oliguria

C. Plyuria

D. Nocturia

4836. During exercise_____________?
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A. Body temperature increases

B. Lymphatic flow from muscle decrease

C. Cerebral blood flow increases if there is increase in systolic blood pressure

D. Blood flow to muscle increases after 1 minute

4837. Brush border is seen in________________?
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A. Bowmans capsule

B. Proximal convoluted tubule

C. Distal convoluted tubule

D. Loop of Henle

4838. Vital capacity is a measure of________________?
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A. Tidal volume plus inspiratory reserve volume plus expiratory reserve volume

B. Expiratory reserve volume plus reserve volume

C. Inspiratory reserve volume plus expiratory volume

D. Tidal volume

4839. The absolute refractory period of an action potential is due to _______________?
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A. Insufficient neurotransmitter

B. Inactivation of Na+ k+ ATPase

C. Depletion of intracellular Na+

D. Voltage inactivation of the Na+ channel

4840. In an isotonic contraction of the muscle________________?
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A. The muscle is not able to move the load

B. The muscle moves a load through a distance

C. The latent period of contraction is shorter than isometric contraction

D. The length of muscle is increased

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