medical MCQs – Page 344

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 Review each marked answer and report any item that may be outdated or unclear.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

6861. Low calcium level will cause_____________?
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A. Tetanus

B. All of the above

C. Hyper excitability of wrist muscle

D. Weak heart action

6862. The primary effect of calcitonin is__________________?
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A. Increases intestinal absorption of calcium

B. Bone resorption

C. Decreases intestinal absorption of calcium

D. Bone deposition

6863. Gastric secretion is stimulated by all the following except_____________?
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A. Gastrin

B. Vagal stimulus

C. Secretin

D. Gastric distension

6864. Secretin is secreted by_____________?
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A. Pancreas

B. Duodenum

C. Stomach

D. Liver

6865. A child is below the third percentile for height. Growth velocity is normal, but chronologic age is more than skeletal age. The most likely diagnosis is______________?
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A. Primordial dwarfism

B. Constitutional delay in growth

C. Genetic short stature

D. Hypopituitarism

6866. Vasopressin is synthesized in the_____________?
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A. Juxtaglomerular apparatus

B. Hypothalamus

C. Vasomotor center

D. Anterior pituitary

6867. Blood coagulation is impaired in___________?
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A. Rickets

B. Hyperparathyrodism

C. Tetany

D. None

6868. The quantity of water lost in expired air each 24 hrs is about___________?
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A. 600 ML

B. 200 ML

C. 400 ML

D. 800 ML

6869. Arterial PO2 is reduced in_____________?
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A. KCN poisoning

B. CO poisoning

C. Pulmonary hypoventilation

D. Anemia

6870. In Haldane effect CO2 dissociation curve is shifted to_____________?
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A. Right

B. Left

C. None of the above

D. Does not shift

6871. Posterior pituitary insufficiency leads to______________?
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A. Cretinism

B. Diabetes insipidus

C. Dwarfism

D. Diabetes mellitus

6872. Normal intrapleural pressure during the start of inspiration is _________ mm of Hg?
0

A. -5

B. 0

C. -7

D. -2

6873. Oxygen dissociation curve shifts to the right by all of the following except_____________?
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A. Rise in pH

B. Rise in H+ ion

C. Rise in temperature

D. Rise in carbon dioxide tension

6874. IN the adrenal gland, androgens are produced by the cells in the____________?
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A. Zona glomerulosa

B. Medulla

C. Zona reticularis

D. Zona fasciculata

6875. The work of breathing__________________?
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A. decreased in lying posture

B. is not affected by respiratory

C. is inversely related to lung compliance

D. remains constant during exercise

6876. The most significant immediate result of lowered serum calcium is_______________?
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A. Decalcification of bones

B. Weakened heart action

C. Hyperirritability of nerves and muscles

D. Decalcification of teeth

6877. Steroid hormones are believed to enter target cells via_______________?
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A. Carrier mediated endocytosis

B. Facilitated diffusion

C. Simple diffusion

D. Cholesterol lined pores in the plasma membrane

6878. which of the following secretions has a very high pH________________?
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A. Saliva

B. Pancreatic juice

C. Bile in gall bladder

D. Gastric juice

6879. Vital capacity is a measure of________________?
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A. Expiratory reserve volume plus reserve volume

B. Tidal volume

C. Inspiratory reserve volume plus expiratory volume

D. Tidal volume plus inspiratory reserve volume plus expiratory reserve volume

6880. Shift of the oxygen dissociation curve to right is caused by the following factors EXCEPT_______________?
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A. Increased concentration of oxygen

B. Increased 2,3 BPG

C. Increased temperature

D. Increased concentration of carbon di oxide

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