Closure of aortic valve occurs before the following event_______________?

Related Mcqs:

1. The dicrotic notch on the aortic pressure curve is caused by_________________?

   A. Closure of the pulmonary valve
   B. Rapid filling of the left ventricle
   C. Closure of the aortic valve
   D. Contraction of the atria

2. No trail closure is necessary with which one of the technique during denture fabrication_____________?

   A. Compression moulding technique
   B. Injection moulding technique
   C. Fluid resin technique
   D. Light cured technique

3. Insufficient closure of the flasks during packing of denture base resin can result in_____________?

   A. Poor colour stability
   B. Less polymerization shrinkage
   C. Increase in vertical dimension
   D. Decrease in vertical dimension

4. Insufficient closure of the flasks during packing of denture base resin can result in_____________?

   A. Poor colour stability
   B. Less polymerization shrinkage
   C. Increase in vertical dimension
   D. Decrease in vertical dimension

5. Polydactyly, craniosynostosis, late closure of fontanelles is a feature of_______________?

   A. Apert’s syndrome
   B. Crouzon’s syndrome
   C. Pierre robin syndrome
   D. Down syndrome

6. Valve of Hasner is present at________________?

   A. Stensons duct
   B. common bile duct
   C. Naso lacrimal duct
   D. maxillary Sinus

7. Which organism causes prosthetic valve endocarditis within 60 days of surgery________________?

   A. Streptococcus Viridans
   B. Staphylococcus epidermis
   C. Staphylococcus aureus
   D. Fungus

8. First heart sound occurs during the period of________________?

   A. Isotonic relaxation
   B. Isovolumetric relaxation
   C. Isovolumetric contraction
   D. Isotonic contraction

9. Injury to the median nerve occurs frequently when following artery is used for taking an ABG sample _____________?

   A. Radial artery
   B. Brachial artery
   C. External carotid artery
   D. Femoral artery

10. Generation of free radicals occurs by all of the following mechanism EXCEPT_____________?

    A. Normal metabolism
    B. Oxygen toxicity
    C. Reperfusion after ischemic injury
    D. All of the above