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Cardiovascular Physiology
(Single Best Answer) Question 1: The following statements are true regarding the SA node except ?
A) Is located at the right border of the ascending aorta
B) It contains specialized nodal cardiac muscle
C) It is supplied by the atrial branches of the right coronary artery
D) It initiates cardiac conduction
Answer (Select an option above to get the answer):
(Single Best Answer) Question 2: Which scientific principle is the basis for thermodilution method used in measurement of cardiac output ?
A) Hagen-poisseuille principle
B) Stewart-hamilton principle
C) Bernoulli s principle
D) Universal gas equation
Answer (Select an option above to get the answer):
(Single Best Answer) Question 3: O2 (Oxygen) dissociation curve is shifted to right in the following except ?
A) Rise in temperature
B) Hypercapnia
C) Raised 2, 3 DPG level
D) Metabolic alkalosis
Answer (Select an option above to get the answer):
(Single Best Answer) Question 4: Blood flow to the heart is maximum during ?
A) Systole
B) Diastole
C) Both
D) None of the above
Answer (Select an option above to get the answer):
(Single Best Answer) Question 5: 2,3 Diphosphoglycerate in Red blood cells does not increase on stimulation to ?
A) Chronic anemia
B) Hypoxia
Answer (Select an option above to get the answer):
Answer (Select an option above to get the answer):
(Single Best Answer) Question 6: Hb dissociation curve is sigmoid because ?
(Single Best Answer) Question 7: Mean circulating filling pressure defines ?
A) CVP and Peripheral arterial pressure
Answer (Select an option above to get the answer):
(Single Best Answer) Question 8: Vagal stimulation of heart causes ?
A) Increased R-R interval
B) Increased Heart Rate
C) Increased Cardiac Output
D) Increased Force of Contraction
Answer (Select an option above to get the answer):
(Single Best Answer) Question 9: Blood pressure by sphygmomanometer ?
A) Smaller than intraarterial pressure
Answer (Select an option above to get the answer):
(Single Best Answer) Question 10: True about heart ?
A) Depolarization occurs from endocardium inwards
B) Exercise decreases systole more than diastole
C) Vagal stimulation causes increase force of contraction
D) Denervation increases heart rate
Answer (Select an option above to get the answer):
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