What organ is this? What are the labels indicating? What is all
the black stuff?
- This is the lung. There are lots of lacy alveoli (such
as A), a bronchiole (C) (I don't see any cartilage there, so it
isn't a bronchus unless there's cartilage on the other side), and some
pulmonary artery branches (B).
- The black stuff is connective tissue macrophages full of all the stuff
we breathe in every day on the lovely NYC streets. This picture is even
worse in a smoker so DON'T SMOKE! Wait until you take repiratory pathology
and see even grosser pictures and learn how 95% of the people who develop
emphysema are smokers or have an enzyme deficiency (alpha - 1- antitrypsin
for the curious). So stop now if you can, before it gets even harder. Good
How can you tell the difference between a pulmonary artery and
a pulmonaary vein?
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