Respiratory System Quiz

The pharynx extends from the base of the skull to which vertebral level?

• C4

• C5

• C6

• C7

Which of the following structures present in nasopharynx?

• Palatine tonsil

• Pyriform fossa

• Opening of Eustachian tube

• Palatopharyngeal fold

Which of the following best describes the posterior wall of the trachea?

• Complete cartilaginous rings

• Flat smooth muscular wall

• Incomplete C-shaped cartilage

• Fibrous membrane only

Why do aspirated foreign bodies more commonly enter the right main bronchus?

• it is longer than the left

• it has more segmental bronchi

• it is wider and more in line with the trachea

• it receives more blood flow

Which structure crosses the 2nd to 4th tracheal cartilages?

• Isthmus of thyroid gland

• Thymus gland

• Jugular arch

• Brachiocephalic artery

In Which of the following stages of lung development the bronchi becomes wider with highly vascular lung

• Canalicular stage

• pseudo-glandular stage

• Saccular stage

• Alveolar stage

About the right lung

• It has 2 bronchial artery

• It is longer & narrower than left lung

• It has 8 or 9 or 10 broncho-pulmonary segments

• It has 3 lobes

About the oblique fissure

• It begins posteriorly at the 6th thoracic spine

• It passes downwards and forwards along the line of the 6th rib

• It ends at the inferior border of the lung at the 4th costochondral junction.

• It present only in the left lung

left bronchial artery arise from

• descending aorta

• arch of aorta

• 3rd right posterior intercostal artery

• Ascending aorta

The typical intercostal nerves are derived from which of the following thoracic ventral rami?

• 2nd to 10th

• 3rd to 6th

• 4th to 7th

• 3rd to 9th