The plane that makes up the medial border of the highlighted quadrant of the abdomen is the midsagittal plane.
In anatomy, the sagittal plane, or longitudinal plane, is an anatomical plane that splits the body into right and left parts. The plane can be at the midpoint of the body and split it into two halves or away from the midpoint and divide it into unequal halves. The anatomical term sagittal was coined by Gerard of Cremona.
What is Midsagittal plane?
Midsagittal plane is the median vertical longitudinal plane that divides a bilaterally symmetrical animal into right and left halves also known as median plane.
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