Competitive Exams: Medical Science MCQs (Practice-Test 133 of 135)

    • Assertion (A): Pacemaker cells of the heart are spontaneously rhythmic.
    • Reason (R): Pacemaker cells undergo a slow diastolic depolarization that enables them to discharge spontaneously and rhythmically.
    1. Both A and R are true and R is the correct explanation of A

    2. Both A and R are true but R is NOT the correct explanation of A

    3. A is true but R is false

    4. A is false but R is true

    • Assertion (A): Sperms are nourished by cells of sertoli.
    • Reason (R): Sertoli cells are present in the interstitium of tests.
    1. Both A and R are true and R is the correct explanation of A

    2. Both A and R are true but R is NOT the correct explanation of A

    3. A is true but R is false

    4. A is false but R is true

    • Assertion (A): There is no correlation between the frequency of intestinal tuberculosis and the severity of pulmonary tuberculosis.
    • Reason (R): Most cases of intestinal tuberculosis are caused either by ingestion of bacteria in food or by swallowing infectious sputum.
    1. Both A and R are true and R is the correct explanation of A

    2. Both A and R are true but R is NOT the correct explanation of A

    3. A is true but R is false

    4. A is false but R is true

    • Assertion (A): The earliest immunoglobulin to be synthesized was immunoglobulin G (IgG).
    • Reason (R): IgG is a monomer by structure.
    1. Both A and R are true and R is the correct explanation of A

    2. Both A and R are true but R is NOT the correct explanation of A

    3. A is true but R is false

    4. A is false but R is true

    • Assertion (A): Ventricular remodeling following full thickness myocardial infarction prevents heart failure.
    • Reason (R): Ventricular remodeling is common after myocardial infarction.
    1. Both A and R are true and R is the correct explanation of A

    2. Both A and R are true but R is NOT the correct explanation of A

    3. A is true but R is false

    4. A is false but R is true

    • Assertion (A): Increase in bone density is seen radiologically in avascular necrosis of bone.
    • Reason (R): There is new bone formation on the surface of original dead bone trabeculae.
    1. Both A and R are true and R is the correct explanation of A

    2. Both A and R are true but R is NOT the correct explanation of A

    3. A is true but R is false

    4. A is false but R is true

    • Assertion (A): Relief from pain occurs following lumbar sympathectomy in Buergers disease.
    • Reason (R): Lumbar sympathectomy increases the cutaneous circulation in ischaemic limb.
    1. Both A and R are true and R is the correct explanation of A

    2. Both A and R are true but R is NOT the correct explanation of A

    3. A is true but R is false

    4. A is false but R is true

    • Assertion (A): Japanese encephalitis is an arbo-viral disease.
    • Reason (R): Pig is the amplifier host.
    1. Both A and R are true and R is the correct explanation of A

    2. Both A and R are true but R is NOT the correct explanation of A

    3. A is true but R is false

    4. A is false but R is true

    • Assertion (A): Anthracosis is caused due to inhalation of coal dust among coal miners.
    • Reason (R): Lung cancer is common among coal miners.
    1. Both A and R are true and R is the correct explanation of A

    2. Both A and R are true but R is NOT the correct explanation of A

    3. A is true but R is false

    4. A is false but R is true

  1. Which one of the following pairs is not correctly matched?

      • Right atrium
      • Fossa ovalis
      • Right ventricle
      • Septomarginal trabecula
      • Left ventricle
      • Sulcus terminalis
      • Left atrium
      • Pulmonary veins
  2. Consider the following statements: Bronchopulmonary anastomosis occurs

    1. within the lung

    2. in the visceral pleura

    3. outside the lung

    Select the correct answer using the codes given below:

    1. 2 and 3

    2. 1 and 2

    3. 3 alone

    4. 1 alone

  3. The normal size of spleen is

    1. 7.5 cm x 5 cm x 2.5 cm

    2. 6 cm x 4 cm x 2 cm

    3. 9 cm x 5 cm x 3 cm

    4. 10 cm x 6 cm x 4cm

  4. The following structures surround the kidneys:

    1. Perirenal fat

    2. Renal fascia

    3. Pararenal fat

    4. Fibrous capsule

    The correct sequence of these structures from without to inwards is

    1. 2, 3, 4, 1

    2. 2, 4, 2, 4

    3. 3, 2, 1, 4

    4. 3, 2, 4, 1

  5. Immediately inferior to the transverse cervical (Mackenrodts) ligament of the uterus, one would find the

    1. Ovarian neuro-vascular bundle

    2. Round ligament of the uterus

    3. ureter

    4. Uterine artery and vein

  6. the ovarian fossa is bounded anteriorly by

    1. ureter

    2. internal iliac artery

    3. obturator nerve

    4. obliterated umbilical artery