Medical MCQs with Answers

This is medical MCQs section with detailed explanations for preparation of screening tests, interviews for government jobs. In this section candidate will learn MCQs on variety of topics from the subject.

1. 5081 Cardiac cycle duration in man is_______________?
   

   1. 0.4 seconds

   2. 0.8 seconds

   3. 1.2 seconds

   4. 1.6 seconds

   See Answer

   Added By: Admin

   Answer

   : 0.8 seconds

   Explanation

   :
   N/A

2. 5082 Coronary blood flow is usually predominantly controlled by_____________?
   

   1. Auto regulation

   2. Hormones

   3. Parasympathetic impulses

   4. Sympathetic impulse

   See Answer

   Added By: Admin

   Answer

   : Auto regulation

   Explanation

   :
   N/A

3. 5083 Fastest conducting tissue in human heart _________________?
   

   1. AV node

   2. SA node

   3. Bundle of His

   4. Purkinje fibers

   See Answer

   Added By: Admin

   Answer

   : Purkinje fibers

   Explanation

   :
   N/A

4. 5084 Closure of aortic valve occurs before the following event_______________?
   

   1. Isovolumetric contraction

   2. Isovolumetric relaxation

   3. Pre-diastole

   4. Pre-systole

   See Answer

   Added By: Admin

   Answer

   : Isovolumetric relaxation

   Explanation

   :
   N/A

5. 5085 Cardiac index is related to ______________?
   

   1. cardiac output and body weight

   2. Cardiac output and body surface area

   3. Cardiac output and work of the heart

   4. Stroke volume and pulse rate

   See Answer

   Added By: Admin

   Answer

   : Cardiac output and body surface area

   Explanation

   :
   N/A

6. 5086 Stimulation of barorceptor leads to ________________?
   

   1. Increased blood pressure, increased heart rate

   2. Decreased B.P , decreased heart rate

   3. Increased B.P, decreased heart rate

   4. Decreased B.P, increased heart rate

   See Answer

   Added By: Admin

   Answer

   : Decreased B.P , decreased heart rate

   Explanation

   :
   N/A

7. 5087 Consider the following statements________________?
   

   1. Starling?s law of heart states that increase in force of contraction is directly related to cardiac ouput

   2. Staling?s law of heart states that the force of ventricular contraction is directly related to the end diastolic volume

   3. Both A and B

   4. None of the above

   See Answer

   Added By: Admin

   Answer

   : Both A and B

   Explanation

   :
   N/A

8. 5088 Minimum blood pressure is in_____________?
   

   1. Aorta

   2. Arteries

   3. Capillaries

   4. Venules

   See Answer

   Added By: Admin

   Answer

   : Venules

   Explanation

   :
   N/A

9. 5089 The largest function of the total peripheral resistance is due to _________________?
   

   1. Venules

   2. Arterioles

   3. Capillaries

   4. Precapillary sphincters

   See Answer

   Added By: Admin

   Answer

   : Arterioles

   Explanation

   :
   N/A

10. 5090 Cardiac output is a measure of______________?
    

    1. Peripheral resistance X tissue fluid

    2. Peripheral resistance X cardiac rate

    3. Blood pressure X cardiac rate

    4. Heart rate X blood volume

    See Answer

    Added By: Admin

    Answer

    : Heart rate X blood volume

    Explanation

    :
    N/A