Flashcards in Lower Respiratory Tract, Lungs, & Pleura Deck (18):
Which organ starts immediately below the cricoid cartilage of the larynx?
- the trachea
What muscle lies on the posterior of the trachea?
- the trachealis muscle
- (note that it is fused with the esophagus)
What do we call an abnormal connection between the trachea and the esophagus?
- a trachea-esophageal fistula
What is the bifurication of the trachea into the left and right bronchi called?
- the carina
Which arteries supply the trachea?
- the inferior thyroid arteries which enter via the posterior side (through the trachealis)
The right main bronchus divides into which major branches?
- the right upper lobe bronchus, the right middle lobe bronchus, and the right lower lobe bronchus
The left main bronchus divides into which major branches?
- the left upper lobe bronchus and the left lower lobe bronchus
What is the region between the lungs called? What does it contain
- the mediastinum
- contains the heart, the great vessels, the azygous vein system, the trachea, the esophagus, and the thymus
The _______ pleura lines the lung, while the _______ is applied firmly to the chest wall and mediastinum.
- visceral pleura covers the lungs
- parietal pleura lines the chest wall and mediastinum
Which of the pleura (visceral or parietal) is sensitive to pain?
- only the parietal pleura because it is innervated by the intercostal nerves
- the visceral pleura has no sensory nerve supply
What attaches each lung to the heart and the trachea?
- the hilum and the pulmonary ligament
- (hilum is above the pulmonary ligament)
What is the lingula (or lingular segment) of the left upper lobe?
- a tongue-like projection at the bottom of the upper lobe that extends around the pericardium
- (it is basically the left lung's middle lobe)
Where do the bronchial arteries branch off from?
- directly from the descending aorta
Where do the bronchial veins drain into?
- the azygous and hemiazygous veins
The lower lobes of the lung are ______ to the upper lobes.
- you can't really see the lower lobes from an anterior view
What path does fluid drained from the lungs take?
- lymphatics drain into the hilar lymph nodes --> bronchial nodes --> tracheobronchial nodes --> mediastinal nodes
Which nerve innervates the diaphragm? What else does it innervate?
- the phrenic nerve
- it also innervates the pericardium