Top 150+ Solved Thorax MCQ Questions Answer

a. It lies behind the sternoclavicular joint

b. It lies in the midline behind the angle of Louis

c. It lies at the level of the 6th rib in the midclavicular line

d. It crosses the midaxillary line at the level of the 10th rib

e. It crosses the 12th rib at the lateral border of the sacrospinalis muscle

a. Has a right border comprised of right atrium and right ventricle

b. Has an anterior (sternocostal) surface comprised of right atrium, right ventricle and a strip of left ventricle

c. Has a posterior surface comprised of left atrium, 4 pulmonary veins and left ventricle

d. Has an inferior (diaphragmatic) surface comprised of left atrium, inferior vena cava and right ventricle

e. All of the above are true

a. The oesophagus extends from the level of cricoid cartilage to traverse the diaphragm at T10

b. The descending thoracic aorta gives off the posterior intercostals arteries

c. It contains the perihilar lymph nodes

d. The oesophagus is 25cm in length

e. The descending aorta commences at the lower level of T4 vertebra

a. Jugular notch lies at the level of T4

b. 2nd costal cartilage articulates separately with the manubrium and the body of the sternum

c. sternohyoid attaches to the manubrium, below the 1st costal cartilage

d. interclavicular ligament makes no attachment to the sternum

e. posterior surface of the manubrium is completely covered with pleura

a. Medial facet of the tubercle faces backwards

b. Angle is the most posterior point

c. Necks are all of equal length

d. There are 3 costotransverse ligaments

e. Intraarticular ligament attaches from horizontal ridge on the head to the intervertebral disc

a. There is usually a constriction at 27cm from the lips, where the left main bronchus crosses

b. Crosses in front of the descending aorta

c. Upper part drains into the azygos vein

d. Begins at the level of C6 vertebra

e. Receives nerve supply from the recurrent laryngeal nerve

a. Diaphragm

b. Mediastinal pleura

c. Peritoneum

d. Left ventricle

e. Pericardium

a. Left vagus is held away from the trachea by branches of the aortic arch

b. Run in front of the lung roots

c. Vagal trunks receive fibres from the ipsilateral nerve only

d. Left vagus crosses the aortic arch superficial to the left superior intercostal vein

e. Right vagus runs superficial to the azygos vein

a. Passes into the abdomen behind lateral arcuate ligament

b. Greater splanchnic nerve comes from 3rd to 7th cervical ganglia

c. 1st thoracic ganglion often fuses with the inferior cervical ganglion

d. crosses 1st rib lateral to the superior intercostals artery

e. gives fibres to the oesophageal plexus

a. 6th

b. 8th

c. 9th

d. 10th

e. 12th

a. Aorta

b. Right phrenic nerve

c. Right vagus nerve

d. 12th

a. Course through the left auricle and infundibulum

b. Supplies 60% of AV nodes

c. Usually has a posterior interventricular branch

d. Supplies 30% of SA nodes

e. 12th

a. Commences level with the body of T10

b. Enters the point of confluence of the left internal jugular and axillary vein

c. Receives the left jugular and subclavian lymph trunks

d. Receives lymph from the right thoracic wall

e. Passes in front of the oesophagus

a. Attempts to reach the midline at all levels

b. Is solely motor

c. Lies in front of the lung root

d. Passes through the diaphragm at T12

e. Splits into two main branches on the undersurface of the diaphragm

a. The neurovascular bundle lies between the external and internal intercostals

b. The transverses muscle lies between the internal and external intercostals

c. The intercostal artery lies netween the nerve and vein

d. The intercostal artery is more superficial than the vein

e. All of the above