low Respiratory Tract Flashcards
Name a flexible tube in the midline and is a continuous of larynx?
Trachea
Explain in Level does the the trachea lies on?
from C6 vertebrae to T4/T5 vertebral level(mediastinum).
Explain the C-shaped cartilage of trachea.
- Orientated horizontally
- Open part (of C shape) faces posteriorly
- Embedded in tracheal wall
- Holds trachea open
A hooked liked shaped cartilage?
Carina
where is the carina cartilage found???
found in the lowest cartilage and projects posteriorly in the midline between origins of main bronchi..
what structure connects adjacent tracheal cartilages?
Annular ligaments
The posterior wall of Trachea consist of?
Trachealis muscle- smooth muscle.
the Relations of trachea?
posterior- esophagus
anterior - muscles
right-crossed laterally by azygos vein/ right vagus nerve
left side by arch of aorta/vagus nerve
The main/primary Bronchi
Trachea divides into left and right main bronchi.
enter root of the lung.
Passes through hilum into lung.
Right main Bronchus
shorter and wider
courses more vertically
Left main bronchus
longer and narrower
courses more
horizontally
if foreign bodies are perhaps inhaled which main bronchi ls likely to receive it?
bodies enter right main bronchus more frequently (than left), because of its wider diameter and more vertical orientation
bronchi that supply the lobes of the lungs
lobar/ secondary bronchi
lobes supplied by the right lobar bronchi?
Superior lobar bronchus
Middle lobar bronchus
Inferior lobar bronchus
lobes supplied by the left bronchi.
Superior lobar bronchus
Inferior lobar bronchus
lobar bronchi divide into which bronchi that is within lung?
segmental/tertiary bronchi
Which part of the lung is supplied by segmental bronchi
bronchopulmonary segments of lungs
Bronchioles
Segmental bronchi divide into bronchioles.
No cartilages present in their walls.
Subdivide to supply respiratory surfaces.
subdivision of bronchioles
conducting—>terminal bronchioles—->respiratory bronchioles
Which structure is the site of gas exchange.
Alveoli
define the lungs??
Organs of respiration
One on either side of mediastinum
- Left and right lungs
Surrounded by pleural cavities
explain the apex and base of the lung?.
Apex
- Projects above 1st rib and into root of neck
Base
- Sits on diaphragm
- Diaphragmatic surface