The first heart sound is produced by the_____________?

Related Mcqs:

1. First heart sound occurs during the period of________________?

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

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. Vasopressin is synthesized in the_____________?

   A. Anterior pituitary
   B. Hypothalamus
   C. Juxtaglomerular apparatus
   D. Vasomotor center

4. The cavernous sinu does not communicate with the_____________?

   A. Opthalumic vein
   B. Internal jugular vein
   C. External jugular vein
   D. Pterygoid plexus

5. Vit B12 is absorbed in the_____________?

   A. Stomach
   B. Terminal ileum
   C. Lower jejunum
   D. Proximal ileum

6. The last primary tooth to be replaced by a permanent tooth is usually the_____________?

   A. Maxillary second molar
   B. Mandibular second molar
   C. Maxillary canine
   D. Mandibular canine

7. In considering the process of eruption, the pre-functional eruptive stage of a tooth begins when the_____________?

   A. Bud stage begins
   B. Cap stage begins
   C. Bell stage begins
   D. Dental lamina begins forming

8. Cementicles are found in the_____________?

   A. Gingiva
   B. Periodontal ligament
   C. Alveolar bone
   D. Cementum

9. Mode of failure during dislodgement of prosthesis cemented with zinc poly carboxylate cement is usually seen at the_____________?

   A. Cement tooth interface
   B. Cement prosthesis interface
   C. Cleavage through the cement layer
   D. Fracture of tooth or prosthesis

10. In reversible hydrocolloid the property by which the transformation from sol to gel and gel to sol is a function of the_____________?

    A. Concentration of filler and plasticizer
    B. Percentage composition by weight of water
    C. Concentration of potassium sulphate
    D. Temperature