Lungs Flashcards
Collection of structures that connect the lung to the mediastinum
Root of the Lung
INCLUDES: pulmonary arteries/veins primary bronchi bronchial arteries/veins pulmonary nerve plexuses lymphatics
Depression or fissure where structures such as blood vessels and nerves enter an organ
Hilus
RIGHT LUNG
445 gms
larger, heavier but shorter and wider than left
3 LOBES
superior
middle
inferior
2 FISSURES
horizontal
oblique
3 lobar bronchi and 10 segmental bronchi
LEFT LUNG
395 gms
2 LOBES
superior
inferior
1 FISSURE
oblique
2 lobar bronchi and 8 - 10 segmental bronchi
(+) LINGULA - corresponds to the middle lobe of R lung
(+) cardiac impression/notch
Has grooves for SVC, arch of ayzgous veins, esophagus
Right Lung
Has grooves for aortic arch, descending aorta
Left Lung
Adheres to the lung on all its surfaces
Visceral Pleura
Adheres to the chest wall, diaphragm, and pericardial sac
Parietal Pleura
Occurs when parietal pleura is pierced and pleural cavity is opened tp the outside environment
LOSS of NEGATIVE PRESSURE – expanded chest (its natural tendency) and collapsed lung (its natural tendency)
Open Pneumothorax
Occurs when air enter the pleural cavity d.t. ruptured bleb (bulla) of a disease lung
Spontaneous Pneumothorax
MC site of spontaneous pneumothorax
Visceral pleura of the UPPER lobe of the lung
From DESCENDING THORACIC AORTA
Supply the BRONCHI, CT of the LUNG and the VISCERAL PLEURA
Bronchial artery
From the PULMONARY TRUNK thru SEGMENTAL ARTERIES
Carry DEOXYGENATED blood into the bronchopulmonary segments and to the alveoli
Pulmonary artery
LEFT - shorter and narrower, arches over the left primary bronchus
RIGHT - runs under the arch of the aorta
Communicates with PULMONARY VEINS
Drain into AZYGOUS and HEMIAZYGOUS VEIBS
Bronchial veins
INTERSEGMENTAL VEINS carrying OXYGENATED BLOOD from the ALVEOLAR CAPILLARIES
Pulmonary veins
2 pulmonary veins leave each lung root to empty into LA of the heart
