Week 1: Thorax Flashcards
Name the muscle that ‘completes’ the trachea posteriorly
Trachealis m.
How many lobes in the left lung?
Two. The superior and inferior lobes, separated by the oblique fissure.
Why are bronchioles more prone to collapse than bronchi?
Bronchi still have the remains of cartilage from the rings of the trachea, but they now sit as plates, which prevents their collapse. Bronchioles don’t have that structural support from the cartilage, which facilitates airways collapse.
Alveoli (define)
Small sacs located at the end of the bronchioles, their very thin membrane allows for gas exchange to occur.
How many lobes in the right lung?
Three. The superior, inferior and middle lobes. The superior and middle lobe are separated by the horizontal fissure, whilst the middle and inferior are separated by the oblique fissure.
The cardiac notch is located on the
Left lung
The horizontal fissure divides the
Superior and the middle lobes
Pulmonary arteries (location in hilum)
Superior and posterior to the pulmonary veins.
Pulmonary veins (location in hilum)
Inferior and anterior to the pulmonary arteries.
The visceral pleural adheres to the
Viscera = lungs
Vagus n. runs ____________ to the hilum
Posterior
Phrenic n. runs ____________ to the hilum
Anterior
If looking at the hilum you only see one bronchi, it is most likely the
Left lung
Pain from the lungs is usually referred into the
Upper thorax
The visceral pleural adheres to the
Lungs
