Ch. 19 (Thorax & Lungs) Flashcards
(42 cards)
What vertebrae is known as the vertebrae prominens?
C7
What is the middle section of the thoracic cavity where the esphogaus, trachea, heart and great vessels are?
mediastinum
What is located on each side of the mediastinum?
pleural cavities
What do pleural cavities hold?
the lungs
What do we call the top region of the lung borders?
apex
highest point of lung tissue
What do we call the bottom region of the lung borders?
base
Where does the base of the lungs rest?
in the pleural cavities, above the diaphragm
What is the separator between the lungs and the abdominen?
diaphragm
The lungs are assymetrical.
Which lung is shorter and why?
right, to make room for the liver
How many lobes does the right lung contain?
3
How many lobes does the left lung contain?
2
Why are the two lobes on the left lung, narrower?
to make room for the heart
What lung has no middle lobe?
left (only two lobes)
Describe the size of the lobes in the lungs when assessing the anterior chest.
- mostly upper and middle lobes
- very little lower lobe is shown
Describe the size of the lobes in the lungs when assessing the posterior chest.
- almost all lower lobe
What thin slippery envelope is located between the lungs and chest wall?
pleurae
Where is the pleural cavity located?
on each side of the mediastinum, inside the pleurae
Air pressure can either be neutral, positive or negative.
The pleural cavity’s air pressure would be described as what?
negative
The pleural cavity’s air pressure is negative.
What does negative air pressure do to the lungs in the pleural cavity?
holds the lungs tightly against the chest wall (keeping them inflated)
When the lungs inspirate, what happens?
air rushes in, diaphragm descends
When the lungs expirate, what happens?
air is expelled, diaphragm relaxs upwards
When assessing the thorax and lungs, what kind of subjective data do you gather?
- cough
- shortness of breath (SOB)
- chest pain w/breathing (burning, stabbing, constant, come & go)
- past Hx respiratory probs/infections
- smoking Hx
- environmental exposure
- self care behaviors
When inspecting the thoractic cage of the posterior chest, what do we inspect?
- spine (nml=symmetrical)
- thorax (nml=symmetrical)
- anterior-posterior/transverse diameter
- skin color, lesions
- ease of breathing/respiratory rate
- position (nml=upright)
When the anterior-posterior diameter of the thoractic cage is the same as the transverse diameter, what would we classify this finding as?
barrel chest