MCQ Snacks - (Free Trial) - Physiology

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Physiology Quizzes & Trivia

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Questions and Answers
  • 1. 
      ln isometric exercise all are increased except :
    • A. 

      Heart rate

    • B. 

      Cardiac output

    • C. 

      Mean arterial pressure

    • D. 

      Systemic vascular resistance

  • 2. 
      Aldosterone receptors are present in all except
    • A. 

      Liver

    • B. 

      Colon

    • C. 

      Hippocampus

    • D. 

      Distal nephron

  • 3. 
      Pulmonary circulation differs from systemic circulation
    • A. 

      Pulmonary vasodilation in hypoxia

    • B. 

      Pulmonary vasoconstriction in hypoxia

    • C. 

      Decreased blood volume during systole

    • D. 

      Increased basal vasoconstrictor tone

  • 4. 
      Increase in threshold level of a nerve on application of a slowly rising sub-threshold stimulus is known as:
    • A. 

      Adaptation

    • B. 

      Accomodation

    • C. 

      Refractoriness

    • D. 

      Electrotonus

  • 5. 
    Which of the following is true about fourth heart sound ‘S4‘ :
    • A. 

      Can be heard by the unaided ear

    • B. 

      Frequency is greater than 20 Hz

    • C. 

      Heard during ventricular filling phase

    • D. 

      Heard during ventricular ejection phase

  • 6. 
    Broca’s area is concerned with:
    • A. 

      Word formation

    • B. 

      Comprehension

    • C. 

      Repetition

    • D. 

      Reading

  • 7. 
    All of the following statements are true for ‘Intestinal Motility’ except:
    • A. 

      Does not depend on Gastric motility

    • B. 

      Increased by Distension

    • C. 

      Increased by Acetylcholine

    • D. 

      Increased by cholecystokinin

  • 8. 
    Which of the following hormone is not secreted by the kidney:
    • A. 

      Renin

    • B. 

      Angiotensin I

    • C. 

      Erythropoietin

    • D. 

      1, 25 Dihydroxycholecalciferol

  • 9. 
    When a muscle cell is relaxed and intracellular ATP levels are normal, a crossbridge will remain in which of the following states?
    • A. 

      Bound to actin and in the low-energy form

    • B. 

      Bound to actin and in the high-energy form

    • C. 

      In the high-energy form, with ADP and Pi bound to it

    • D. 

      In the high-energy form, with ATP bound to it

  • 10. 
    Which of the following is true for the excitation-contraction coupling of all muscle types (skeletal, cardiac, and smooth)?
    • A. 

      An action potential causes calcium levels in the cytosol to increase

    • B. 

      Calcium binds to troponin

    • C. 

      Thick and thin filaments slide past each other

    • D. 

      A & c

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