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The axial twist theory was designed to explain how the pattern of contralateral organization, [10] decussations and chiasmas develops, and why this pattern is so evolutionarily stable, [25] having no known exceptions throughout the 500 million years of vertebrate evolution. According to the theory, the contralateral organization develops as ...
The axial twist theory (a.k.a. axial twist hypothesis) is a scientific theory proposed to explain a range of unusual aspects of the body plan of vertebrates (including humans). [1] It states that the rostral part of the head is "turned around" regarding the rest of the body. [ 2 ]
A transverse plane (also known as axial or horizontal plane) is parallel to the ground; it separates the superior from the inferior, or the head from the feet. The transverse planes identified in Terminologia Anatomica are the transpyloric plane , the subcostal plane , the transumbilical (or umbilical) plane , the supracristal plane , the ...
The Axial Twist theory proposes that not the whole body, but only the anterior region of the head is inverted. [16] [17] These theories by Kinsbourne [16] and de Lussanet & Osse [17] also explain the presence of an optic chiasm in vertebrates and the contralateral organization of the forebrain.
The transverse plane (also known as the horizontal plane, axial plane and transaxial plane) is an anatomical plane that divides the body into superior and inferior sections. [1] It is perpendicular to the coronal and sagittal planes.
Axial (from Latin axis 'axle'): around the central axis of the organism or the extremity. Two related terms, "abaxial" and "adaxial", refer to locations away from and ...
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In molecular biology, an axoneme, also called an axial filament, is the microtubule-based cytoskeletal structure that forms the core of a cilium or flagellum. [ 1 ] [ 2 ] Cilia and flagella are found on many cells , organisms , and microorganisms , to provide motility.