Lungs and Pleura Flashcards
Mediastinum
Inserted between the right, and left lungs and their pleura
visceral pleura
Line the lungs
parietal pleura
Line the walls of the thoracic cavity
where does the visceral and parietal pleura come together?
They come together, and become continuous at the root of the lung
parietal pleura parts
Costol pleura- lining thoracic walls
Diaphragmatic pleura- lining of the diaphragm
mediastinal pleura- lining of the mediastinum
right lung
Three lobes, superior, middle and inferior
Lobes are separated by horizontal and oblique fissures
Left lung
two lobes superior and inferior
lobes are separated by an oblique fissure
Bronchial tree
each lung receives a primary or principal bronchus from the trachea
Each principal bronchus divides into lobar bronchi which supplies a lobe of the lung
each lobar bronchus divides into tertiary segmental bronchi, which supplies a specific bronchopulmonary segment
what supplies venous blood to the lungs of the aeration?
The branches of the pulmonary arteries
pulmonary arteries run with
The bronchi and lie posterior to them
there are no arterial anastomoses between
Bronchopulmonary segment
Therefore, removal of a pulmonary segment of the lung will not in danger of the viability of the adjacent segments
The pulmonary veins drain
Oxygenated blood to the left atrium of the heart
superior and inferior pulmonary veins are formed at
hilus of each lung
superior pulmonary veins receives tributary’s from
The superior and middle lobes of the right lung
and superior and lingula lobes of the left lung
Inferior pulmonary veins received tributaries from
The lower lobes of the right, and left lungs
hilum of the lung
Or Root
attachment point of the lung
Connects the lungs to the heart and trachea
Surrounded by the reflection of parietal to visceral pleura
Provide highway for the main bronchus, pulmonary vessels, bronchial vessels, lymph vessels, and nerves
Lymphatic drainage
Superficial lymphatic drains to the surface and runs along the visceral pleura to the hilum
lymphatic drainage follows the bronchi and collects at the hillum
at hillum, lymphatic drainage is filtered by the tracheobronchial nodes
parietal pleura, and thoracic wall superiorly
pleura extends through the thoracic inlet it is called a cupula of the pleura
parietal pleura and thoracic wall inferiorly
pleura related three ways
Anterior- 7 costal cartilage
Midaxillary- 10th costal cartilage
Posterior- 12 vertebral level
Costodiaphragmatic recess parietal pleura and thoracic wall
Separation of parietal pleura from visceral pleura for the costal and diaphragmatic pleura meet
Lungs to thoracic wall superior
Lung extends through the thoracic inlet as the apex of the lung
lungs to thoracic wall anterior
The lung extends down to the sixth costal cartilage
lungs to thoracic wall midaxillary
The lung extends down to the eighth costal cartilage
Lungs to thoracic wall posterior
Lung extends down to the 10th or 11th rib
Bronchopulmonary segment
Largest subdivisions of a lobe
Pyramid shaped segments
apexes facing the root of the lung
base at the pleural surface
Separated from adjacent segments by connective tissue septa
Supplied independently by segmental bronchus in a tertiary branch of the pulmonary artery
Named according to the segmental bronchi supplying them
Drained by intersegmental parts of the pulmonary veins that live in the connective tissue between and drain adjacent segments
usually 18 to 20 in number
10 in the right lung, 8 to 10 in the left lung
Surgically resectable
superior lobe segments right lung
Apical
Posterior
Anterior
middle lobe segment, right lung
Lateral
medial
anterior lobe segments, right lung
Superior
Anterior basal
Medial basal
lateral basal
Posterior basal
apicoposterior part of superior lobe segments for left lung
apical
Posterior
Anterior
superior lobe segments for left lung
superior lingular
Inferior lingular
anteromediobasal part of the inferior lobe segments of the left lung
Anterior basal
Medial basal
inferior lobe segments of the left lung
superior
Lateral basal
Posterior basal
