Top 150+ Solved Thorax MCQ Questions Answer

a. median arcuate ligament is at L1

b. vena caval opening transmits IVC and left phrenic nerve

c. oesophageal opening is at T8

d. expiration depends on active contraction of the diaphragm

e. the motor supply to the diaphragm is solely from the phrenic nerves

a. intercostal and lumbar arteries pass forward in the neurovascular plane between internal and external oblique

b. lymphatic drainage above the umbilicus drains posteriorly to the scapular (post) group of axillary nodes

c. division of a single intercostal nerve causes anaesthesia in its supply area

d. the thoracoepigastric vein unites the internal thoracic vein and the superficial epigastric vein – connecting IVC and SUC

e. venous return follows intercostal and lumbar arteries only

a. right phrenic nerve

b. left phrenic nerve

c. oesophageal branch of the right gastric artery

d. vagal trunks

e. hemiazygous vein

a. azygous vein

b. thoracic duct

c. hemiazygous vein

d. a and b correct

e. a, b and c correct

a. this occurs to the left of the midline behind the 7th costal cartilage

b. the left phrenic nerve accompanies it

c. this occurs behind the 8th right costal cartilage

d. the right phrenic nerve accompanies it

e. it passes between the muscular levels of the diaphragm

a. scalene muscles

b. latissimus dorsi

c. sternocleidomastoid

d. quadratus lumborum

e. erector spinae

a. the trachea is separated from the apex of the left lung by the left common carotid and left subclavian

b. the SUC and brachiocephalic veins lie anterior to the brachiocephalic trunk

c. the vagus nerve (right) lies medial to the right common carotid artery

d. the trachea bifurcates at the lower limit of the superior mediastinum

e. the thymus lies behind the manubrium

a. the vagus nerves pass in front of the lung roots

b. the phrenic nerves pass behind the lung roots

c. the vagus nerves pass behind the lung roots

d. the left phrenic passes anterior to the left bronchus and exits the diaphragm through the IVC opening

e. the right recurrent laryngeal nerve hooks around the ligamentum arteriosum

a. the inferior (diaphragmatic) surface is made up of one third right ventricle and two thirds left ventricle, separated by the posterior interventricular branch of the left coronary artery

b. the right border of the heart extends from the lower border of the right 3rd costal cartilage to the lower border of the right 6th costal cartilage

c. the posterior surface (base) consists almost entirely of the left atrium receiving the three pulmonary veins

d. the left border consists of the left ventricle only

e. the right border consists mostly of the right atrium

a. the anterior cardiac vein

b. the great cardiac vein

c. the middle cardiac vein

d. the oblique vein (of the LA)

e. the posterior vein of the LV

a. thoracic aorta

b. oesophagus

c. accessory hemiazygous vein

d. the azygous vein

e. the sympathetic trunks

a. the left pulmonary artery is longer than the right

b. the bronchial branch to the upper lobe is separate on the left

c. the pulmonary veins lie anterior and inferior to bronchus

d. the pulmonary ligament connects the right and left lungs directly

e. the pulmonary trunk divides in front of the right main bronchus

a. is functionally separate from the superficial cardiac plexus

b. lies to the right of ligamentum arteriosum

c. receives predominantly right phrenic input

d. is posterior to the bifurcation of the trachea

e. is smaller than the superficial cardiac plexus

a. is shorter than the abdominal aorta

b. enters the thorax through muscular diaphragm at T8

c. creates a groove over the quadrate lobe of liver

d. crosses the right renal and suprarenal arteries

e. commences in front of the right common iliac artery

a. have valves at their terminations

b. is formed by two venae comitantes in the pelvis

c. enter the inferior vena cava

d. receive the suprarenal veins as tributaries

e. none of the above