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INTERNAL INTERCOSTALS

Anatomy-Thorax

INTERNAL INTERCOSTALS

MUSCLES-MIDDLE LAYER OF THORAX
1. O: lower border of ribs above.
2. I: the fibers run down + backwards to the costal cartilage + costal groove of the rib below.
3. NS: intercostal nerves.
4. A: lowers ribs in forced expiration, prevents pushing out or drawing in of the intercostal spaces in expiration + inspiration.


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REFERENCES

1. Mcminn. (2003). Last's Anatomy. Elsevier Australia. ISBN:0729537528. Read it at Google Books - Find it at Amazon
2. Netter, F. H. (2019). Atlas of human anatomy. Philadelphia, PA: Elsevier.
3. Image: no reference available.

Ⓒ A. Manickam 2018

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