Origin
Transverse processes of cervical, thoracic, and lumbar vertebrae.
Insertion
Spinous processes of cervical, thoracic and lumbar vertebrae.
Blood supply
Vertebral artery, occipital artery, posterior intercostal arteries, lumbar arteries.
Nerve supply
Spinal nerves.
Action
It helps to rotate the spine, i.e., the backbone.
Disease/Injury
Sudden bending, twisting, lifting heavy objects or sitting in poor posture for whole day can easily injure this muscle in the back.
Muscle Exercise
To strengthen this muscle, you can practice lower back stretches. Lie on the back with bent knees. Pull the knees towards your chest with your hips being slightly raised.
Interesting facts
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