Sagittal plane

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Sagittal plane is a vertical plane which passes from ventral (front) to dorsal (rear) dividing the body into right and left halves.[1]

Variations

Examples include:

  • The term parasagittal is used to describe any plane parallel to the sagittal plane. In practice, such a section is often referred to simply as a "sagittal" view because viewing is achieved along the sagittal axis (see below). Due to the specific nature of its definition, only one true sagittal plane exists, and it corresponds to the "mid-sagittal" view. Be aware that the term "sagittal view" may be applied to any parasagittal section as well as the sagittal plane, as the parasagittal and sagittal axes are identical (parallel to the sagittal plane).
    Specific named parasagittal planes include:

Terminology

The term sagittal is derived from the Latin word Sagitta, meaning "arrow". An image of an arrow piercing a body and passing from front (anterior) to back (posterior) on a parabolic trajectory would be one way to demonstrate the derivation of the term. Another explanation would be the notching of the sagittal suture posteriorly by the lambdoidal suture —similar to feathers on an arrow.

  • Sagittal axis is the axis perpendicular to the sagittal plane, i.e., the sagittal axis is formed by the intersection of the coronal and the transversal planes.
  • Coronal axis or frontal axis is the axis perpendicular to the coronal plane, i.e., the one formed by the intersection of the sagittal and the transversal planes.
  • Extension and flexion are the movements of limbs relative to the sagittal plane.

Additional images

See also

References

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