The sagittal plane is a vertical plane through the longitudinal axis dividing the body into left and right portions. If the animal is bisected straight down the midline, the section is called a "midsagittal" section. If the animal is sectioned away from and lateral to the midline, the section is referred to as "parasagittal".
It is any plane parallel to the sagittal plane.
Sagittal or parasagittal
This is called a sagittal plane if divided this way with symmetrical left and right halves. If the section produces asymmetrical halves, this is a parasagittal section.
parasagittal
Parasagittal is correct.
It is any plane parallel to the sagittal plane.
Though flexion and extension can occur in a variety of planes depending on the body's position, if you have a body in anatomical position, then all flexion and extension occurs on the sagittal plane.
Sagittal Plane
Solar plexus
Coronal plane
Of or pertaining to an arrow; resembling an arrow; furnished with an arrowlike appendage., Of or pertaining to the sagittal suture; in the region of the sagittal suture; rabdoidal; as, the sagittal furrow, or groove, on the inner surface of the roof of the skull., In the mesial plane; mesial; as, a sagittal section of an animal.
Transverse.