Which plane divides the body into right and left parts?

• A. Sagittal Plane
• B. Median or Midsagittal Plane
• C. Parasagittal Plane
• D. Frontal Plane

Answer: (A)

Think about how planes slice the body in a left-right sense. A sagittal plane runs from front to back and divides the body into right and left portions. It’s a vertical cut that can be anywhere parallel to the midline. When that plane hits exactly down the middle, it’s called the median or midsagittal plane, which yields equal right and left halves. If the plane is parallel to the midline but offset to one side, it’s a parasagittal plane—still splitting into right and left, just not evenly.

The frontal (coronal) plane, by contrast, runs side to side and separates the front (anterior) from the back (posterior). So the plane that divides the body into right and left parts is the sagittal plane, with the equal-halves version called the median plane.