Which term divides the body into left and right?

• A. Supine
• B. Nystagmus
• C. Sagittal plane
• D. Petechia

Answer: (C)

In anatomy, planes describe how the body is divided. A sagittal plane is a vertical plane that runs from front to back and divides the body into left and right portions. If it passes exactly along the midline, it’s the midsagittal (median) plane, creating equal left and right halves. The other terms don’t describe a left-right division: supine means lying on the back, nystagmus is involuntary rhythmic eye movement, and petechia are tiny red or purple spots caused by small hemorrhages in the skin. So the term that divides the body into left and right is the sagittal plane.