Intimate intercostal muscle

Innermost intercostal muscle

SHORT DESCRIPTION

• Medial internal intercostal muscle.
• Its fibers descend obliquely lower and posteriorly.

ORIGIN

• inner lip of the costal groove.

INSERTION

• top edge of the underlying rib.

OCUPA

• The intercostal region extending from the angle of the rib to 5 to 6 cm from the lateral edge of the sternum.

INNERVATION :  Intercostal nerves Correspondents.

FUNCTION

• Rib tend to rise, pulling the upper raise the bottom. This occurs whenever the 1st or 2nd rib are fixed by the scalene.

OBSERVATION

• Among the intimate intercostal muscle and internal intercostal muscle, you are the intercostal neurovascular bundle.

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