Top 150+ Solved Thorax MCQ Questions Answer

a. left vagus

b. left phrenic

c. left 4th intercostal

d. all of the above

e. none of the above

a. where it is crossed by right main bronchus

b. where it is crossed by the azygous vein

c. where it is crossed by the left subclavian artery

d. where it is crossed by the thoracic duct

e. none of the above

a. on the right of the opening of the inferior vena cava

b. within the interatrial septum

c. at the opening of the coronary sinus

d. just above the crista terminalis

e. around the lower superior vena cava

a. 7th left costal cartilage

b. left linea semilunaris

c. tip of the 9th left costal cartilage

d. left nipple

e. level of the 11th thoracic vertebra

a. the arch of the aorta

b. the pulmonary trunk

c. the left atrium

d. the left auricle

e. the left ventricle

a. 4th intercostal space

b. 5th intercostal space

c. 6th intercostal space

d. a level slightly lower than the left diaphragm

e. the same height as the central tendon

a. it arises from the commencement of the left pulmonary artery

b. it joins the aorta at the level of the commencement of the brachiocephalic artery

c. the superficial part of the cardiac plexus lies anterior to it

d. the left recurrent laryngeal nerve hooks around it

e. the deep cardiac plexus lies to its right

a. thyroid cartilage to sternal notch

b. hyoid bone to sternal angle –

c. cricoid cartilage to sternal angle

d. thyroid cartilage to sternal angle

e. cricoid cartilage to sternal notch

a. is supported inferiorly by a sling of fibres from the left crus of the diaphragm

b. has its narrowest part at the opening of the diaphragm

c. has a blood supply from inferior thyroid arteries, oesophageal branches of aorta and branches of left gastric artery

d. has no contact with thoracic vertebrae

e. is crossed on the right by the arch of the aorta and azygous vein

a. each nerve provides motor supply to own half of diaphragm, left phrenic also supply half of right crus

b. the phrenic nerve is supplied by its own pericardiophrenic artery which accompanies it

c. the right phrenic nerve is in contact with venous structures throughout its course

d. the left phrenic nerve passes to the inferior surface of diaphragm through muscle

e. arising mainly from C4 in the neck, the nerve passes behind the anterior scalene

a. aorta

b. inferior vena cava

c. left phrenic nerve

d. right phrenic nerve

e. oesophagus

a. pus behind the prevertebral fascia can gravitate to the posterior mediastinum

b. mediastinal tumours tend to project more into the left hilum than the right

c. pretracheal fascia blends with the pericardium anteriorly

d. pus from the cervical tracheal region may gravitate to the middle mediastinum

e. the arch of the aorta lies in the middle mediastinum

a. contains smooth muscle in its upper third

b. lies posterior to the left atrium

c. is partly innervated by the phrenic nerve

d. passes through the central tendon at the level of T10 vertebrae

e. has no connective tissue attaching to the aorta

a. the intercostal vessels and nerves run between the external and internal intercostal muscles

b. all intercostal nerves have anterior and lateral cutaneous branches

c. the internal intercostals assist inspiration

d. both the manubriosternal and xiphisternal joints are synovial with discs

e. the upper ribs have ‘pump-handle’ movement NOT ‘bucket handle’ movement

a. the oesophageal opening is at the T10 level

b. the aortic opening may also contain the azygous vein and thoracic duct

c. the right dome is higher than the left

d. the blood supply is from the pericardiophrenic artery

e. the vena caval opening is at T8