Scalene - Definition

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Scalene is an adjective used in medicine meaning slanted, or uneven, the scalene muscles constituting a group of muscles located deep in the lateral neck stretched in a slanting position from the cervical vertebra to the ribs, all measuring different lengths, hence their name. There are three scalene muscles: the scalenus medius, anterior, and posterior, all contributing to respiratory movement. When we inhale, these muscles pull the two first ribs upwards. They also allow the head to tilt to one side.