MCQs Week 5 Loading... 1. Atrial natriuretic peptide Constricts afferent arterioles in the kidneyConstricts mesangial cellsIncreases sodium reabsorption from renal tubulesIncreases capillary permeabilityQuestion 1 of 23 Loading... 2. Hydralazine Dilates veins but not arteriolesIs contraindicated in pregnancyCan cause an SLE type syndrome in 10-20% of patientsIs useful as a single agent in the treatment of hypertensionQuestion 2 of 23 Loading... 3. A 4yr old patient presents with high fevers, conjunctivitis and cervical lymphadenopathy. Which vasculitic condition is most likely? Kawasaki diseaseChurg-Strauss syndromeInfectious vasculitisMicroscopic polyangitisQuestion 3 of 23 Loading... 4. Fatty streaks in the aorta Contain lipid which is predominantly extracellularAppear in virtually all individuals after adolescenceIncrease in number as atherosclerotic plaques become more prevalentDo not vary with race, sex or geographyQuestion 4 of 23 Loading... 5. Pronator teres Flexes the forearmIs supplied by the median nerve C5/C6Has a single point of proximal attachmentIs tested by pronating the forearm against resistance - if acting normally the muscle is seen and palpated at the lateral margin of the cubital fossaQuestion 5 of 23 Loading... 6. Verapamil Has no effect on the AV nodeHas diarrhoea as a common side effectIs effective in the emergency treatment of SVTIs a dihydropyridine calcium channel blockerQuestion 6 of 23 Loading... 7. Regarding ACE inhibitors They prevent the inactivation of bradykininCaptopril is a prodrugThey have no role in treating the normotensive diabetic patientThey are useful antihypertensives in late pregnancyQuestion 7 of 23 Loading... 8. A patient is polycythaemic with Hct of 59%, which of the following may also be raised? Mean blood pressureRadius of the resistance vesselsRadius of the capacitance vesselsCentral venous pressureQuestion 8 of 23 Loading... 9. Regarding the venous drainage of the arm The superficial and deep veins anastamose freelyThere are no valves in the deep veins of the armThe basilic vein is a deep vein of the armThe axillary vein is formed by the merging of the brachial veins and cephalic veinQuestion 9 of 23 Loading... 10. Which of the following increases the risk of digoxin induced arrhythmias? HyperkalaemiaHypercalcaemiaHypermagnasaemiaHypernatramiaQuestion 10 of 23 Loading... 11. Which of the following is INCORRECTLY paired? CO2 - vasodilationPotassium - vasodilationLactate - vasoconstrictionEndothelin 1 - vasoconstrictionQuestion 11 of 23 Loading... 12. Abdominal aortic aneurysms are Common above the renal arteriesCommon in Marfans syndromeCaused by a weakness of the intimaA source of atheroemboli to the kidneysQuestion 12 of 23 Loading... 13. The valsalva maneouvre has all of the following characteristics EXCEPT It produces a strongly positive intrapleural actionIt involves relaxation of the diaphragmIt is followed by a brief period of hypertension and slowing of the heartIt may decrease peripheral vascular resistanceQuestion 13 of 23 Loading... 14. Injury to the ulnar nerve will cause paralysis of all of the following EXCEPT Medial half of flexor digitorum profundusFlexor digiti minimi brevisAbductor pollicis longusFlexor carpi ulnarisQuestion 14 of 23 Loading... 15. The brachialis muscle Arises from the upper third of the humerusInserts into the coronoid process and tuberosity of the ulnaIs a powerful supinator of the forearmAdducts the armQuestion 15 of 23 Loading... 16. Which of the following DOES NOT dilate arterioles in the skin? Increased body temperatureBradykininSubstance PVasopressinQuestion 16 of 23 Loading... 17. A 35yr old patient presents with visual field defects and weak pulses in the arms. Which vasculitic condition is most likely? Churg-Strauss syndromeMicroscopic polyangitisTakayasu arteritisTemporal arteritisQuestion 17 of 23 Loading... 18. Which of the following statements regarding the cubital fossa are INCORRECT? The cephalic and basilic veins are visible in the subcutaneous tissue of the cubital fossa when a tourniquet is appliedThe floor of the cubital fossa is formed by the brachioradialis and supinator muscleThe medial border is made up of pronator teresThe terminal part of the brachial artery as it divides into the radial and ulnar arteries lies within the cubital fossaQuestion 18 of 23 Loading... 19. A 20yr old patient has a widespread rash after commencing amoxicillin 3 days previously. Which vasculitic condition is most likely? Polyarteritis nodosaNon-infectious vasculitisMicroscopic polyangitisInfectious vasculitisQuestion 19 of 23 Loading... 20. With regard to nitrate antianginals They stimulate cGMP production via nitric oxideThey may cause significant methaemaglobinaemiaTolerance to them is due to an increase in tissue sulf-hydryl groupsThey produce increased coronary blood flow regardless of atherosclerotic coronary artery diseaseQuestion 20 of 23 Loading... 21. The brachial artery Lies deep to brachialisDescends infero-mediallyThe superior ulnar collateral artery is the largest branch of the brachial arteryThe deep artery of the arm is a branch of the brachial artery and accompanies the radial nerve through the radial groove around the humerus.Question 21 of 23 Loading... 22. Regarding innervation of the hand The palmar branch of the median nerve passes under the flexor retinaculumThe deep branch of the ulnar nerve supplies the interossei musclesDorsal interossei muscles are supplied by the radial nerveCarpal tunnel syndrome results in loss of thumb adductionQuestion 22 of 23 Loading... 23. Digoxin has all of the following actions on cardiac electrical function EXCEPT Decreasing ventricular muscle automaticityDecreasing AV node conduction velocityDecreasing refractory period in Purkinje system and ventriclesCauses T wave inversion on the ECGQuestion 23 of 23 Loading...
