Internal intercostal muscles
Group of muscles between the ribs / From Wikipedia, the free encyclopedia
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The internal intercostal muscles (intercostales interni) are a group of skeletal muscles located between the ribs. They are eleven in number on either side. They commence anteriorly at the sternum, in the intercostal spaces between the cartilages of the true ribs, and at the anterior extremities of the cartilages of the false ribs, and extend backward as far as the angles of the ribs, hence they are continued to the vertebral column by thin aponeuroses, the posterior intercostal membranes. They pull the sternum and ribs upward and inward.
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Quick Facts Details, Origin ...
Internal intercostal muscles | |
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Details | |
Origin | Rib - superior border |
Insertion | Rib - inferior border |
Artery | Intercostal arteries |
Nerve | Intercostal nerves |
Actions | Hold ribs steady |
Antagonist | External intercostal muscles |
Identifiers | |
Latin | musculi intercostales interni |
TA98 | A04.4.01.013 |
TA2 | 2312 |
FMA | 74085 |
Anatomical terms of muscle |
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