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The sagittal plane (/ ˈ s æ dʒ ɪ t əl /; also known as the longitudinal plane) is an anatomical plane that divides the body into right and left sections. [1] It is perpendicular to the transverse and coronal planes.
An anatomical plane is a hypothetical plane used to transect the body, in order to describe the location of structures or the direction of movements. In human and non-human anatomy, three principal planes are used: The sagittal plane or lateral plane (longitudinal, anteroposterior) is a plane parallel to the sagittal suture. It divides the body ...
Posselt's envelope of motion or Posselt's envelope of movement refers to the range of motion of the lower jaw bone, or mandible. This envelope was first described by Ulf Posselt in 1952. It is a diagrammatic representation of a sagittal view of maximum mandibular movement.
In general, motion is classified according to the anatomical plane it occurs in. Flexion and extension are examples of angular motions, in which two axes of a joint are brought closer together or moved further apart. Rotational motion may occur at other joints, for example the shoulder, and are described as internal or external.
Sagittal plane motions of the ankle occur at the talocrural joint. As the heel contacts the ground the ankle joint is near neutral in either slight plantar flexion or dorsiflexion. Immediately following heel strike the ankle plantar flexes until the foot is positioned flat on the ground.
P: A Parasagittal plane (yellow) through one eye; parasagittal planes comprise the class of planes parallel to (and therefore lateral to) the sagittal plane. Standard anatomical planes and anatomical axes are used to describe structures in animals.
The sagittal plane is the plane that divides the body or an organ vertically into right and left sides. If this vertical plane runs directly down the middle of the body, it is called the midsagittal or median plane. If it divides the body into unequal right and left sides, it is called a parasagittal plane, or less commonly a longitudinal ...
The sagittal planes, also called the parasagittal planes, which are parallel to the median plane. [1] The coronal plane, also called the frontal plane, which divides the body into front and back. [2] The transverse plane, also called the axial plane or horizontal plane, which is perpendicular to the other two planes. [2]