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The frontal plane, also called the coronal plane, which divides the body into front and back. [2] The horizontal plane, also known as the transverse plane, which is perpendicular to the other two planes. [2] In a human, this plane is parallel to the ground; in a quadruped, this divides the animal into anterior and posterior sections. [3]
A diagram showing four of the six canonical orbital elements. The orbital plane (yellow) intersects a reference plane (grey). orbital inclination The tilt of an object's orbit around an astronomical body, expressed as the angle between the orbital plane or axis of direction of the orbiting object and a plane of reference. orbital mechanics ...
Meaning: a prefix used to make words with a sense opposite to that of the root word; in this case, meaning "without" or "-less". This is usually used to describe organisms without a certain characteristic, as well as organisms in which that characteristic may not be immediately obvious.
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Traditionally it has been suggested that bilateral animals evolved from a radial ancestor. Cnidarians, a phylum containing animals with radial symmetry, are the most closely related group to the bilaterians. Cnidarians are one of two groups of early animals considered to have defined structure, the second being the ctenophores. Ctenophores show ...
Focal plane tomography uses the fact that the focal plane appears sharper, while structures in other planes appear blurred. By moving an X-ray source and the film in opposite directions during the exposure, and modifying the direction and extent of the movement, operators can select different focal planes which contain the structures of interest.
Based on Austin Wright's novel Tony and Susan, the psychological 2016 drama Nocturnal Animals, starring Jake Gyllenhaal and Amy Adams, is known for an ambiguous ending that leaves it up to the ...
A plane parallel to the surface of a tooth. For example, if a drill bur would be inserted into a tooth from any side ( proximal , vestibular , oral ), the depth of the hole is defined from the axial wall of the hole (from the long axis walls (vertical surfaces bounding the tooth)).