Lobar and segmental bronchi (dave's notes)

Question 1

Describe the left and right main bronchi

Answer 1

Each main bronchus is about 5cm long. The right is slightly shorter, and more vertical than the left.

Question 2

Where is the carina found? What is the clinical significance of this?

Answer 2

To the left of the midline. Therefore foreign bodies are much more likely to fall into the right main bronchus.

Question 3

How is the upper lobe branch of the right main bronchus given off?

Answer 3

Outside the lung

Question 4

What does each lobar bronchus give rise to?

Answer 4

Segmental bronchi. About ten in each lung.

Question 5

What is the apical segment of the lower lobe supplied by?

Answer 5

A bronchus which is the highest to arise from the posterior surface of the bronchial tree.

Question 6

How are the bronchopulmonary segments named?

Answer 6

They are given the same names as the segmental bronchi

Question 7

What are the names of the bronchopulmonary segments in the right upper lobe? How many segments?

Answer 7

3: Apical, posterior, anterior

Question 8

What are the names of the bronchopulmonary segments in the right middle lobe? How many segments?

Answer 8

2: Lateral and medial.

Question 9

What are the names of the bronchopulmonary segments in the right lower lobe? How many segments?

Answer 9

5: Apical, medial, aterior basal, lateral basal, posterior basal

Question 10

What are the names of the bronchopulmonary segments in the left lower lobe? How many segments?

Answer 10

5: Apical (superior), medial (cardiac), anterior basal, lateral basal, posterior basal

Question 11

What are the names of the bronchopulmonary segments in the left upper lobe? How many segments?

Answer 11

3: Apicoposterior, apicoposterior ??, anterior

Question 12

What are the names of the bronchopulmonary segments in the left middle lobe? How many segments?

Answer 12

2: Superior lingual, inferior lingual.

Question 13

What is the blood supply to the bronchial tree?

Answer 13

The bronchial tree receives its own blood supply - two on the left from the aorta, and one on the right form the 3rd intercostal artery

Question 14

What is the blood supply to the alveoli?

Answer 14

The alveoli receive a rich capillary plexus from the pulmonary tree

Question 15

What is the lymphatic drainage of the lung?

Answer 15

Lymph runs towards the hilum. From the pleura their run along the bronchi and the pulmonary artery.

Question 16

Where are the hilar nodes found?

Answer 16

Just within and without the lung

Question 17

Nerve supply, structure and development

Answer 17

See text. Purple not seen, orange seen once, yellow seen twice etc.