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M C Q  Thorax
M C Q  Thorax
M C Q  Thorax
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M C Q Thorax


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  • 1. MCQ of THORAX for practice…………….. Dr. Ashfaq. 1. The right lung- 6. Relation of base of left lung are- a Is larger than the left a fundus of the stomach b Is divided by fissures into the upper and lower b right lobe of the liver lobes and the lingula c Possesses 10 BPSs c spleen d Is less prone to infection d left kidney e Is related inferiorly to the liver e left suprarenal gland 2. Intercostal nerves- 7. Intercellular junctions within intercalated discs are- a are ventral ramus of thoracic spinal nerve a zonula occludentes b are 12 pairs in number b fascia adherentes c are purely motor nerves c macula adherentes d lie below intercostal vessels d gap junctions e carry GVE fibers e tight junctions 3. The thymus- 8. Aortic opening of the diaphragm transmits- a develops from 2nd pharyngeal pouch a arch of the aorta b contains Hassal’s corpuscle b right phrenic nerve c is a central lymphoid organ c azygos vein d produces B lymphocyte d vagus nerve e secretes some hormone e thoracic duct 4. Branches of arch of the aorta are- 9. Respiratory unit includes- a coronary arteries a segmental bronchus b brachiocephalic trunk b respiratory bronchiole c left subclavian artery c terminal bronchiole d right common carotid artery d alveolar sacs e pulmonary trunk e alveoli 5. Sternum- 10. Fibrous pericardium- a is a flat bone a is also called epicardium b is a membranous bone b is intimately blended with central tendon of the diaphragm c forms anterior boundary of the mediastinum c develops from splanchnopleuric layer of d contains red marrow throughout life lateral plate mesoderm e is formed by fusion of 5 sternebrae d is supplied by autonomic nerves e is pain sensitive
  • 2. 11. The thoracic trachea- 16. Nonkeratinized stratified squamous epithelium is found in- a Bifurcates at the level of the sternal angle a tongue b Is closely related to the esophagus b esophagus c Has complete fibrocartilaginous rings within c thoracic duct its walls d skin d Is related anteriorly to the thyroid gland e stomach e Ends at the level of the sternal angle 12. Contents of the middle mediastinum are- 17. Gaseous exchange occurs in- a thymus a trachea b trachea b primary bronchus c heart c lobar bronchus d thoracic duct d alveolar sacs e ascending aorta e alveoli 13. A typical thoracic vertebra has- 18. Parts of the parietal pleura are- a heart shaped body a costal pleura b demifacet on body b mediastinal pleura c foramen transversarium c visceral pleura d mammilary process d pulmonary pleura e short, slender transverse process e diaphragmatic pleura 14. Fate of the fertilization include- 19. Branches of the internal thoracic artery are- a determination of chromosomal sex a superior phrenic artery b restoration of haploid number of chromosome b superior epigastric artery c initiation of cleavage c posterior intercostal artery d formation of blastocyst d musculophrenic artery e formation of morula e pericardiophrenic artery 14. Coronary arteries are- 19. Azygos vein- a the very first branches of arterial system a receives blood from bronchial veins b vasa vasorum b is paired c elastic arteries c join superior & inferior vena cava d connected to each other by actual anastomosis d enters thoracic cavity through aortic opening e functional end arteries e drains into inferior vena cava 1. The adult heart- 6. The right ventricle- a Is related posteriorly to the esophagus, left a Forms most of the inferior surface of the main bronchus and aorta heart b Lies on the left dome of the diaphragm b Is normally oval in cross section c In health weighs approximately 900 gm c Has a tricuspid valve in its inflow part d Admits the great veins on its posterior surface d Usually contains three conical papillary e Is totally enclosed by the serous pericardium muscles e Possesses a pulmonary orifice guarded by a tricuspid valve
  • 3. 2. The mitral valve- 7. The ascending aorta- a Possesses two cusps a Ascends as far as the right sternoclavicular b Guards the right atrioventricular orifice joint b Lies intrapericardially c Is closely related to the aortic valve c Has no branches d Has no papillary muscle attachments d Is related posteriorly to the right main e Lies on the posterior wall of the left ventricle bronchus e Is related anteriorly to the sternum 3. The thoracic duct- 8. The lung tissue- a Arises in the thorax a Receives its oxygenated arterial supply via b Ascends anterior to the vertebral column branches of the thoracic aorta b Has venous drainage into the azygos system of veins c Drains into the left brachicephaliv vein c Has no lymph drainage d Drains mainly thoracic structures d Has ciliated columnar epithelial lining e Is joined by the right lymphatic duct throughout e Receives a nerve supply from the vagus 5. The thoracic esophagus- 10. The pulmonary trunk- a Lies posterior to the trachea a Lies at its origin to the root of the aorta b Is directly related to the vertebral column b Is connected to within a common sleeve of throughout its course serous pericardium with the ascending aorta c Is related to the left atrium c Bifurcates anterior to the aortic arch d Pierces the central tendon of the diaphragm at d Is related to the left pleura and lung the level of the 8th thoracic vertebra e Is closely related to both right and left e Is crossed by the left bronchus coronary arteries 3. First thoracic vertebra/’s- 8. Primary cartilaginous joints are- a is typical a sternoclavicular b presents two demifacets on body b costovertebral c vertebral foramen is small c first sternocostal d superior vertebral notch is prominent d xiphisternal e spinous process is directed horizontally e costochondral 4. Muscle(s) of inspiration include(s)- 9. Azygos vein- a External intercostal a ends into inferior vena cava b Pectoralis major b is a part of portal circulation c The diaphragm c has no valve d Serratus anterior d connects superior & inferior vena cava e Internal intercostal of same side e passes through vena caval opening of diaphragm