serratus posterior superior
noun
: a thin quadrilateral muscle of the upper and dorsal part of the thorax that arises chiefly from the spinous processes of the lowest cervical and the first two or three thoracic vertebrae, is inserted into the second to fifth ribs, and acts to elevate the upper ribs
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“Serratus posterior superior.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/serratus%20posterior%20superior. Accessed 29 Nov. 2024.
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