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scalenus Quick reference
One of four muscles (scalenus anterior, scalenus medius, scalenus minimus, and scalenus posterior) located anterolaterally on each side of the neck, deep to the sternocleidomastoid muscle. They have their origins on the transverse processes of the cervical vertebrae and their insertions posteriolaterally on the first two ribs. They flex and rotate the neck, and elevate the first two ribs during inspiration....
Scalenus muscles Reference library
Transverse process of 3–6 cervical vertebra.
Tubercle of first rib.
Anterior rami of C5 and