Anatomy - The Thorax

Question 1

How many pairs of ribs are there?

Answer 1

12

Question 2

Which ribs are the true ribs, false ribs and floating ribs

Answer 2

1-7 true (articulate directly with sternum)
8-10 false (articulate with ribs above)
11 and 12 are floating ribs (no articulation with sternum)

Question 3

At what vertebral level does the left main bronchus lie?

Answer 3

T6

Question 4

What fissures divide the lung into lobes and what level does the right lung fissure correspond with?

Answer 4

Both lungs have an oblique fissue
Right lung has a horizontal fissure which runs from the sternum at the level of the 4th rib

Question 5

What does each root of the lung consist of?

Answer 5

1 Pulmonary artery
2 pulmonary veins
1 bronchus
Bronchial vessels
Pulmonary plexus of nerves
Lymphatics

Question 6

What structures lie medial to the left lung?

Answer 6

Heart
Arch of aorta
Thoracic aorta
Oesophagus

Question 7

What structures lie medial to the right lung?

Answer 7

SVC and IVC
Oesophagus
Azygous vein
Heart