A. AV Valve closes
B. When ventricular pressure falls below aortic pressure
C. When ventricular pressure falls below atrial pressure
D. None of the above
Related Mcqs:
- Rubber base impressions are poured immediately as they_______________?
A. Continue to polymerize
B. Become elastic
C. Show imbibition and syneresis
D. Show gelation - Wax pattern is ideally invested immediately to decrease the dimensional changes caused by_______________?
A. Decrease flow
B. Continuous expansion
C. Relaxation of the internal stresses
D. Water loss - A type of immediately occuring reaction in which antigens combine with antibodies already attached to the surface of mast cells and basophils is called_____________?
A. Type I hypersensitivity
B. Type II hypersensitivity
C. Type III hypersensitivity
D. Type IV hypersensitivity - The palatal muscle that ends in a tendon that hooks around the hamulus and is inserted in the palate is the_________________?
A. Palatoglossus
B. Tensor veli palatini
C. Levator veli palatini
D. Palatopharyngeus - In adults, the spinal cord normal ends at______________?
A. Lower border of LI
B. Lower border of L3
C. Lower border of S1
D. Lower border of L5 - 7th,9th ,10thcranial nerves ends in____________?
A. Nucleus tractus solitarius
B. Nucleus ambigous
C. Dorsal nucleus of vagus
D. Long tract of trigeminal nerve - 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 - In determining blood pressure by auscultatory method_____________?
A. The loudest sound is the diastolic pressure
B. Systolic pressure estimation tends to be lower than those make by palpatory method
C. The first sound heard is the systolic pressure
D. The sounds that are heard are generated in heart - 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 - 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