Pleura and Lungs

Question 1

_Linings of Pulmonary Cavities _

• Endothoracic fascia
• Suprapleural membrane
• Parietal pleura
• Visceral pleura
• Pulmonary ligament

Answer 1

• Layer of connective tissue connecting costal parietal pleura to the thoracic wall
• Provides a limit to the cavity and stops the lungs from expanding out of the thoracic cavity
• Lines the pulmonary cavity. Has cervical, costal, mediastinal and diaphragmatic parts.
• Covers lung surface
• Sleeve of pleura hanging down below lung root

Question 2

Surface Markings of Pleura and Lungs

• Lungs
• Pleura

Answer 2

• Mid-clavicular line @ Rib 6, mid axillary line @ Rib 8 and scapular line @ Rib 10.
• Mid-clavicular line @Rib 8, mid axillary line @ Rib 10 and scapular line @ Rib 12

Question 3

Lobes

• Right lung has…
• Left lung has…

Answer 3

• 3
• 2

Question 4

Left lung Hilum

• Pulmonary artery
• Pulmonary veins
• Main bronchus

Answer 4

• Most superior
• Two. Most inferior, with one on the curve of the “P”. Also most anterior.
• Towards left side, fairly central. Also most posterior.

Question 5

Right Lung Hilum

• Pulmonary arteries
• Pulmonary veins
• Main bronchus

Answer 5

• Two. One superior and one central.
• Take up large area across bottom of “P”, with the tail of “P” being the pulmonary ligament. Also most anterior.
• Towards the right side, fairly tall and sitting from a central position to the apex. Most posterior.

Question 6

Bronchopulmonary Segmentation

• Order

Answer 6

• Trachea -> Main bronchi -> Lober bronchi -> Segmental bronchi -> Bronchioles (conducting, terminal or respiratory) -> Alveolar duct -> Alveolar sac with capillary plexus
• 3 lober bronchi on right and 2 on left based on number of lobes.

Question 7

Lymphatics

• Direction of drainage

Answer 7

• From periphery, towards hilum and up trachea