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Median plane

Median plane
Human anatomy planes, with median plane in red.
Surface lines of the front of the thorax and abdomen.
Latinplanum medianum
Anatomical terminology

Whether in reference to the anatomy of the human or other members of the Bilateria, the median plane, also called a mid-sagittal plane and related terms, is used to describe the sagittal plane as it bisects the body vertically through the midline marked by the navel, dividing the body exactly in left and right side. The term parasagittal plane is used to refer to any plane parallel to the sagittal and median plane.[1] [2] [3]

It is one of the lines used to define the right upper quadrant of the human abdomen.

The midsternal line can be interpreted as a segment of the median plane.


  1. ^ Butler, Robert A.; Belendiuk, Krystyna (1977-05-01). "Spectral cues utilized in the localization of sound in the median sagittal plane". The Journal of the Acoustical Society of America. 61 (5): 1264–1269. doi:10.1121/1.381427. ISSN 0001-4966.
  2. ^ Sisson, Septimus (1911). A Textbook of Veterinary Anatomy. p. 18.
  3. ^ Johnston, T.B. (1959). Grayʼs Anatomy: descriptive and applied. p. xxii.
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Median plane
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