First heart sound occurs during the period of________________?

Related Mcqs:

1. The first heart sound is produced by the_____________?

   A. Closure of the aortic and pulmonary valves
   B. Opening of the aortic and pulmonary valves
   C. Closure of the mitral and tricuspid valves
   D. Opening of the mitral and tricuspid valves

2. 2nd heart sound is characterized by all except______________?

   A. Due to closure of semilunar valves
   B. Is occasionally split
   C. Has longer duration than 1st heart sound
   D. Marks the onset of diastole

3. Absolute period when whole heart is in diastole is______________?

   A. 0.7 seconds
   B. 0.3 seconds
   C. 0.7 seconds
   D. 0.4 seconds

4. True ankyloglossia occurs as a result of________________?

   A. Union between tongue and floor of mouth
   B. Absence of lingual frenum
   C. Lingual frenum attached to the tip of tongue
   D. Short lingual frenum

5. All the heart valves are open during which stage of cardiac cycle __________________?

   A. Systolic ejection
   B. Isovolumetric relaxation
   C. Isovolumetric contraction
   D. None of the above

6. During the development of a tooth, sound coalescence of the lobes results in_____________?

   A. Grooves
   B. Fissures
   C. Cusps
   D. All of the above

7. Intramuscular route is precluded during the medication of________________?

   A. Anti-hypertensives
   B. Anti-diabetics
   C. Anticoagulants
   D. Anti-fibrinolytics

8. Mirgration of odontoblasts into dentinal tubules occurs during ________________?

   A. Cavity preparation
   B. Dehydration
   C. Water irrigation
   D. None of the above

9. The maximum shrinkage during firing proces in ceramic occurs in__________________?

   A. High Bisque stage
   B. Low Bisque stage
   C. Medium Bisque stage
   D. Fusion stage

10. Effect on force of contraction of heart is_____________?

    A. Chronotropic effect
    B. Dromotropic effect
    C. Bathmotropic
    D. Ionotropic effect