Midsternal line

Midsternal line
	Thoracic cage
	Surface lines of the front of the thorax and abdomen. (Midsternal line not labeled, but is visible at center, running vertically.)
	Anatomical terminology

On the front of the thorax, one of the most important vertical lines is the midsternal line, the middle line of the sternum.

It can be interpreted as a component of the median plane.

References

This article incorporates text in the public domain from page 1309 of the 20th edition of Gray's Anatomy (1918)

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Anatomical planes and lines
Sagittal plane	Median plane front (Anterior median line/Midsternal line, Parasternal line, Midclavicular line, Anterior axillary line, Midaxillary line) back (Posterior median line, Scapular line, Posterior axillary line)
Transverse plane	Thoracic plane Transpyloric plane Subcostal plane Umbilical plane Supracristal plane Intertubercular plane Interspinous plane
Coronal/frontal plane	Sternal plane