Question
Asked Feb 4, 2019
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Hoe do the various planes that can be superimpose on the body "divide it up" into sections?

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Expert Answer

Step 1

In anatomy, body of an organism is described by taking it in standard position. This helps in describing various observations taken during diagnostic procedures.  It avoids confusion as different positions can be taken by an organism which results in different placement of its organs.

In anatomical terms, section is a 2-D surface of a three dimensional structure which is cut to observe that structure. For example, when a surface of an organ is cut so as to observe it under the microscope is called section.

Plane is defined as two dimensional surface which divides the body of an organism into two equal halves in dimension.

Step 2

Various virtual planes which are used in chordate anatomy are:

  • Transverse plane: It seperates body into upper and lower part or technically into superior and inferior parts with most superior bein head and most inferior being feet. It is also known as axial or X-Z plane.
  • Saggital plane: It separates the body into left and right sides.  It is also known as lateral or Y-Z plane.
  • Frontal plane: It separates the body into back and front portions i.e. dorsal and ventral sides. It is also known as coronal or Y-X plane. 
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Step 3

Term section is used is same way as plane but it is restricted to organs. For example, if an organ is cut via transverse plane, the divisions are known as tr...

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