A ______________ sections divides the human body into equal left and right halves.

Question

BlackTom AI · Accepted Answer

The question asks which type of section divides the human body into equal left and right halves.
Option 1: parasagittal — This plane runs parallel to the sagittal plane but does not pass through the midline, so it does not create equal left and right halves. It would cut off a portion of one side, leading to unequal portions.
Option 2: sagittal — A sagittal plane runs lengthwise from front to back, separating the body into left and right portions. However, unless it specifically passes through the midline, the halves may not be equal; many sagittal cuts are para-sagittal (off-center) and yield unequal sections.
Option 3: transverse — Also called horizontal, this plane cuts perpendicularly to the long axis, dividing the body into superior (top) and inferior (bottom) parts, not into left and right halves.
Option 4: frontal — Also known as coronal, this plane divides the body into anterior (front) and posterior (back) parts, again not left vs. right halves.
Option 5: midsagittal — This is the exact midline sagittal plane that runs down the center of the body, dividing it into equal left and right halves. It is the standard definition for achieving symmetry along the left-right axis.
In summary, only the midsagittal plane achieves an equal division of left and right portions, while the other planes separate the body in ways that do not guarantee equality along that axis.

BIOLOGY 211-B09C Practice Exam 1

A ______________ sections divides the human body into equal left and right halves.

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