Symmetry in biology is about the overall shape of the body and its parts. Bilateral Symmetry: Symmetry in which the body can be divided into 2 mirror-image halves. Typically it is a thin expanded green structure which bears a bud in its axil. Animals with radial symmetry are diploblastic. 2. made in the direction of a radius; going from the center outward or from the circumference inward along a radius: a radial cut. Symmetry in biology is the balanced distribution of duplicate body parts or shapes. It is joined to the radial canals which extend to the margin of the bell, where tentacles are attached. These sentences come from external sources and may not be accurate. 3. pertaining to the radial (lateral) aspect of the arm as opposed to the ulnar (medial) aspect. From the above discussion, it will be noted that examination of pulse is of great clinical importance. Start studying biology radial and bilateral symmetry. Bilateral Symmetry: Symmetry in which the body can be divided into 2 mirror-image halves.. radial symmetry [L. radius, a spoke of a wheel + Gk. Definition of Radial Symmetry . What does radiality mean? Characteristics of Leaf 3. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. Radial Symmetry: The organism’s body generates identical sides in any plane which it is divided along the central axis. The definition of radial symmetry in animals, plants and other organisms concerns a complete or partial form that is the result of a series of anatomical sections that repeat on multiple planes. more_vert. Define radial symmetry. They play several pivotal roles in the production and placement of neurons during vertebrate brain development. radial symmetry synonyms, radial symmetry pronunciation, radial symmetry translation, English dictionary definition of radial symmetry. Meaning and definition of radial symmetry : Characterizing a body shaped like a pie or barrel, with many equal parts radiating outward like the spokes of a wheel, present in cnidarians and echinoderms. MedicineNet does not provide medical advice, diagnosis or treatment. Glial cells, neuroglial cells, or glia are no longer considered to have a purely structural role within the central nervous system; they have also been found to regulate nerve firing rates, brain plasticity, and immune responses. 3. of, like, or pertaining to a radius or a ray. When an organism is radially symmetrical, you could cut from one side of the organism through the center to the other side, anywhere on the organism, and this cut would produce two equal halves. radial (comparative more radial, superlative most radial) 1. Animals with radial symmetry are diploblastic. Radial symmetry is another type of animal symmetry, where parts of an animal branch out from a central point, with each part matching the other. radial artery an artery in the forearm, wrist, and hand; the one usually used for taking the pulse. Get homework help and answers to your toughest questions in biology, chemistry, physics, math, calculus, engineering, accounting, English, writing help, business, humanities, and more. From it, the condition of the heart, of the arteries, the extent of blood pressure, etc., may be known. 2. pertaining to a radius. Radial symmetry definition in biology with the explanation to review "What is Radial symmetry?" ... You can visualize it as a combination of radial and bilateral symmetry. Free learning resources for students covering all major areas of biology. radial definition: 1. spreading out from a central point: 2. relating to the area around the central part of the body…. 1 (especially of change or action) relating to or affecting the fundamental nature of something; far-reaching or thorough. 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