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  • Question 1 - Which of the following pairs are correct concerning arteriolar tone? ...

    Incorrect

    • Which of the following pairs are correct concerning arteriolar tone?

      Your Answer: Neural control: vasoconstriction activated by sympathetic nerves

      Correct Answer: Hormonal control: catecholamines affect the adrenergic receptors of the vascular smooth muscle

      Explanation:

      Catecholamines released from the adrenal medulla act on the noradrenergic receptors of the vascular smooth muscles. In the skeletal muscles and liver it causes vasodilation whilst it causes vasoconstriction in the rest of the blood vessels of the body.

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      47.4
      Seconds

  • Question 2 - Where are the baroreceptors of the great arteries located? ...

    Incorrect

    • Where are the baroreceptors of the great arteries located?

      Your Answer: In the basement membrane

      Correct Answer: In the adventitia

      Explanation:

      Arterial baroreceptors are located in the aortic arch and carotid sinuses, and are formed by small nerve endings present in the adventitia of these vessels.

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      16.7
      Seconds

  • Question 3 - Visceral afferent fibers are found in the following areas except the…? ...

    Incorrect

    • Visceral afferent fibers are found in the following areas except the…?

      Your Answer: None of the above

      Correct Answer: Trigeminal nerve

      Explanation:

      The general visceral afferent (GVA) fibers carry impulses from viscera to the central nervous system. The cranial nerves that contain GVA fibers include the facial nerve, the glossopharyngeal nerve and the vagus nerve

    • This question is part of the following fields:

      • Medicine
      • Neurology
      18.6
      Seconds

  • Question 4 - Cyclic AMP is broken down by which enzyme ...

    Incorrect

    • Cyclic AMP is broken down by which enzyme

      Your Answer: Adenylyl cyclase

      Correct Answer: Phosphodiesterase

      Explanation:

      cAMP decomposition into AMP is catalysed by the enzyme phosphodiesterase.

    • This question is part of the following fields:

      • Cell Biology
      • Medicine
      4.1
      Seconds

  • Question 5 - The free radical most abundantly formed by the immune system is: ...

    Correct

    • The free radical most abundantly formed by the immune system is:

      Your Answer: Hydroxyl radical

      Explanation:

      Neutrophil and macrophage phagocytosis stimulates various cellular processes including the respiratory burst whereby increased cellular oxygen uptake results in the production of the potent oxidant bactericidal agents, hypochlorous acid and hydroxyl radical.

    • This question is part of the following fields:

      • Cell Biology
      • Medicine
      12.7
      Seconds

  • Question 6 - Erythropoietin is synthesized by which cells of the nephron? ...

    Correct

    • Erythropoietin is synthesized by which cells of the nephron?

      Your Answer: Tubular interstitial cells

      Explanation:

      Erythropoietin is produced by interstitial fibroblasts in the kidney in close association with peritubular capillary and proximal convoluted tubule. It is also produced in perisinusoidal cells in the liver. While liver production predominates in the fetal and perinatal period, renal production is predominant during adulthood.

    • This question is part of the following fields:

      • Medicine
      • Renal
      21.4
      Seconds

  • Question 7 - Which of the following biochemical profiles is seen in a normal 65 year...

    Correct

    • Which of the following biochemical profiles is seen in a normal 65 year old female? (in comparison to a normal 24 yr. old female)

      Your Answer: Increased FSH, LH; decreased oestrogen, progesterone

      Explanation:

      During menopause, a woman’s number of ovarian follicles becomes depleted; as a result, oestrogen and progesterone levels drop, and LH and FSH levels increase. One of the criteria to diagnose menopause is the absence of menstrual period for a year, along with a serum FSH level increased to 30 mIU/ml or higher. LH also rises with the onset of menopause.

    • This question is part of the following fields:

      • Endocrinology
      • Medicine
      26
      Seconds

  • Question 8 - The premotor cortex is: ...

    Correct

    • The premotor cortex is:

      Your Answer: Brodmann area 6

      Explanation:

      A Brodmann area in the brain is defined by cytoarchitecture, histology and organization of cells:Primary Sensory 3,1,2Primary Motor 4Premotor 6Primary Visual 17Primary Auditory 41Brocas 44

    • This question is part of the following fields:

      • Medicine
      • Neurology
      5.2
      Seconds

  • Question 9 - What are the diagnostic criteria for an ST segment elevation type of acute...

    Correct

    • What are the diagnostic criteria for an ST segment elevation type of acute myocardial infarction?

      Your Answer: 1 mm ST elevation in 2 limb leads

      Explanation:

      The current guidelines for the ECG diagnosis of the ST segment elevation type of acute myocardial infarction require at least 1 mm (0.1 mV) of ST segment elevation in the limb leads, and at least 2 mm elevation in the precordial leads. These elevations must be present in anatomically contiguous leads. (I, aVL, V5, V6 correspond to the lateral wall; V3-V4 correspond to the anterior wall ; V1-V2 correspond to the septal wall; II, III, aVF correspond to the inferior wall.)

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      18.8
      Seconds

  • Question 10 - A 56 year old woman taking procainamide develops drug induced erythematosus. Which of...

    Incorrect

    • A 56 year old woman taking procainamide develops drug induced erythematosus. Which of the following features is the most characteristic of this condition?

      Your Answer: It rarely causes pulmonary disease

      Correct Answer: It may occur with chlorpromazine

      Explanation:

      Drug induced lupus is usually positive for antinuclear and antihistone antibodies, typically without renal or neurologic involvement. However, pulmonary involvement is common. Drugs that can induce lupus include isoniazid, hydralazine, procainamide, chlorpromazine, and other anticonvulsants.

    • This question is part of the following fields:

      • Connective Tissue
      • Medicine
      19.3
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Cardiovascular (1/3) 33%
Medicine (5/10) 50%
Neurology (1/2) 50%
Cell Biology (1/2) 50%
Renal (1/1) 100%
Endocrinology (1/1) 100%
Connective Tissue (0/1) 0%
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