Inner core muscles

Picture of inner core muscles

The transversus abdominis is like a corset around your abdomen. It’s the muscle you work if you pull in your stomach.

Multifidus is a muscle that lies along your spine from your neck to your pelvis, with short fibers connecting one bone (vertebra) of the spine to other vertebrae near it.

The muscles of the pelvic floor are most noticeable when you squeeze to keep yourself from urinating.

The diaphragm is a big, flat muscle inside your rib cage, in between your chest and your belly. The diaphragm can be thought of as a deep core muscle. It helps with breathing but also works with the other core muscles to make the trunk more stable.

Last Updated: March 6, 2009

Medical Review: William M. Green, MD - Emergency Medicine & William H. Blahd, Jr., MD, FACEP - Emergency Medicine & Mary "Ginny" Virginia Keely, PT, MS, OCS, FAAOMPT - Physical Therapy

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