Calcium ions triggers muscle contraction by binding to ___________________?

Related Mcqs:

1. The class of low molecular weight calcium binding proteins seen predominantly in developing enamel are_____________?

   A. Enamelin
   B. Amelogenin
   C. Tuftelin
   D. Ameloplakin

2. Water of reaction needed to react completely with 100 g of calcium sulphate hemihydrates to convert it to calcium sulphate dihydrate______________?

   A. 18.6ml
   B. 22.2ml
   C. 30.4ml
   D. 45.3ml

3. Following antimicrobials are termed as type I calcimimetics that mimic the stimulatory effect of calcium, on the calcium sensing receptor to inhibit PTH secretion by the parathyroid gland EXCEPT______________?

   A. Streptomycin
   B. Hamycin
   C. Neomycin
   D. Gentamicin

4. Among the muscles of TMJ the following muscle opposing stabilizing and antagonistic muscle force as far as the disc is concerned_____________?

   A. Medial pterygoid
   B. Temporalis
   C. Lateral pterygoid
   D. External pterygoid

5. Stimulating mechanoreceptors or nociceptors in mouth triggers the_______________?

   A. Jaw opening reflex
   B. Jaw clenching reflex
   C. Jaw gnashing reflex
   D. None of the above

6. Floor of mouth is made by which muscle ___________________?

   A. Genioglossus
   B. Geniohyoid
   C. Mylohyoid
   D. Masseter

7. In an isotonic contraction of the muscle________________?

   A. The muscle moves a load through a distance
   B. The muscle is not able to move the load
   C. The latent period of contraction is shorter than isometric contraction
   D. The length of muscle is increased

8. Hemoglobin is the major buffer in blood, bicarbonate ions diffuse out of erythrocyte into plasma in exchange of_______________?

   A. Potassium
   B. Phosphate
   C. Carbonic acid
   D. Chloride ion

9. Ions participating in clotting mechanism are________________?

   A. Iron
   B. Copper
   C. Calcium
   D. Aluminum

10. What effect does hyperventilation have on the oxygen binding affinity of hemoglobin ?

    A. P50 and oxygen affinity decrease
    B. P 50 and oxygen affinity increase
    C. P 50 decreases and the oxygen affinity increases
    D. P50 increase and the oxygen affinity decreases