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In this article we will discuss about the T.S. book lung of scorpion with the help of diagram.
Fig. 156 BOOK-LUNG OF SCORPION
1. This is a slide of T.S. of book lung of an arachnid (Scorpion).
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2. The book lungs are respiratory organs and are always in pair.
3. Each book lung is comprised of numerous (100-130) leaflets arranged like leaves of the book.
4. Each leaflet is divided into compartments – the blood spaces through partitions of blood vessels.
5. The leaflets are separated from each other through air spaces.
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6. The leaflets remain enclosed in a closed chamber, which is divided by the leaflets into an upper pulmonary chamber and a lower atrial chamber.
7. The atrial chamber communicates outside through stigmata or stigma.
8. Air enters the atrial chamber through stigma and after aerating the leaflets goes out through pulmonary chamber. Thus, oxygenation of blood takes place.
