Tracheobronchial Tree And Lungs Flashcards
D: alveolus
An air sac of the lung
D:alveolar duct
The terminal part of the air passages which has alveolar sacs opening into it
D: bronchus
any of the major air passages to the lungs that diverge from the trachea
Singular= bronchus Plural = bronchi
D: bronchioles
Any of the lower subdivisions of the bronchi
D: bronchopulmonary segment
A pyramidal segment of lung tissue aerated by a tertiary bronchus : smallest functional unit of the lung
D: parterial bronchus
The right upper lobe broncos which is located superior to its corresponding branch of pulmonary artery. All the other are hyperarterial
D: carina
The last tracheal ring that looks like the keel of a boat
D: lung
A respiratory organ
D: lung root
Made up of structures that connect a lung to the heart and trachea
D: lung hilum/hilus
A depression the mediastinal surface of the lung which is the only site of entrance and exit of structures associated with the lungs
D: pulmonary ligament
The reflection of the mediastinal parietal pleura that forms a sleeve below the lung root on each side
D: trachea
A large fibrocartilage nous tube reinforced by rings of cartilage, extending from below the larynx to the beginning of bronchi and located in the midline of the neck and superior mediastinum
D: trachealis muscle
A longitudinal smooth muscle strip that bridges the gap between the free ends of C-shaped cartilages at the posterior surface of the trachea anterior to the esophagus
Where is the Upper respiratory tract located?
Nose to trachea
How is the right bronchi different than the left?
The right is short straighter and wider
If a foreign body enters the trachea where will it end up?
The right lung
-Note: The left lung is narrower and longer
What muscle is found in the trachea?
Trachealis
Where does the trachea lack rings structure?
On the posterior side.
From where does the trachea extend?
From where the larynx ends at C6 vertebra to the transverse thoracic plane (TTP), where it bifurcated at T4 IVD
What is the diameter of the trachea?
Adult- `1 inch
Infant 1 cm
New born 1mm
Where does the trachea bifurcate?
T the level of the sternal angle of Louis into two primary bronchi
What lies anteriorly to the trachea?
Superficial to deep: skin, fascia, strap muscles, thyroid, isthmus, inferior thyroid vessels, jugular venous arch, jugular notch
What lies later to the trachea?
Carotid sheath, thyroid lobes, brachiocephalic trunk (Rt.), azygous arch (RT.), aortic arch (Lt.)
What lies posteriorly to the trachea?
Esophagus, recurrent laryngeal nerve (RLN), thoracic duct, vertebral column
Why is the Tracheal carina important?
It’s the most sensitive part and a landmark for bronchoscopy