While souls are one and individual everywhere ("our soul is no less here than in the sky, no less in Italy than in India"), bodies are different and manifold depending on material circumstances and vital urges, for "division of bodies is determined by the needs of life (vitae commodum)" (Paralipomenon, OO, X, 446a).
Interestingly, the primary somatosensory area (SI) generally follows the natural anatomical divisions of body parts, having receptive fields confined to single fingers or limbs (Penfield and Rasmussen, 1950; Blankenburg et al., 2003).
At a higher resolution one could observe further details on the head – eyes and nose; on extremities – hands and feet etc., whereby initial division of the body into head, trunk and extremities as noted at low resolution remains preserved.
The divisions of bodies into just two sexes is itself, for Butler, driven by a set of heterosexual gendered norms.
The division of the body into head and trunk becomes apparent, and the brain, spinal cord, and internal organs begin to develop.
The mouth appears ventrally in the animal hemisphere [ 34], as an ectodermal invagination of a few cells, and a subequatorial ectodermal groove marks the division of the body into an anterior/animal introvert and a posterior/vegetal trunk (introvertula stage).
One effect of this vitamin is to help ensure normal division of the body's cells - something which would be expected to reduce the risk that cells will undergo abnormal or cancerous change.
Sea star reproduction typically is heterosexual, but hermaphroditism (reproductive organs of both sexes in one animal) occurs, and a few sea stars reproduce asexually by division of the body (fragmentation).
The existence of an actual infinite is absurd, however, and so the division of the body must terminate at a finite number of indivisible parts or atoms.
Other than fragmentation carried out for the purpose of reproduction, the division of the body may happen inadvertently due to part being detached by a predator, or part may be actively shed by the starfish in an escape response.
