la-beaute–de-pandore: Pierre Jamet * * * *“The dual function of support and protecti
la-beaute–de-pandore:Pierre Jamet * * * *“The dual function of support and protection is emphasized in the embryological development of the spine. After fertilization, the one-celled egg rapidly proliferates into a many-celled, fluid-filled sphere. The sphere flattens, forming separate layers; the upper, outer one is called ectoderm; the lower, entoderm.Later, the entoderm folds into a hollow tube running the length of the unit, giving form to an intestinal tract. The whole is rapidly enwrapped by a developing third layer, the mesoderm. The elongated cylinder, the cells of the entoderm, has by now formed an intestinal tube. At the same time, the ectoderm grooves into a closed tube, later to be called the neural tube. (Still later, this becomes the spinal canal, and will be encased in the spine.) All nervous components develop from this original ectodermal tissue.The spine, developing from the mesoderm, begins its intimate relationship of support and protection with the ectodermal nervous system when it closes around the neural tube. The rest of the ectoderm separates from the neural tube, proliferates, and finally enwraps the entire developing organism as skin.The middle layer, the mesoderm, develops into the structures that are the primary concern of this book. From it evolve blood and bones, cartilage, fascia, and muscle. Early in this development, a line of thirty-three denser spots appear; these will differentiate into bony segments. The spots first develop into a cartilaginous casing; later, this becomes true bone and supplies protection to the central nervous tissue. Some of this general supportive and protective function of the mesoderm is supplied through growth in the ventral direction. Later in their development, we call these bony bands ribs. Lower in the body, they become the individual units of the pelvis. As ribs, the bony bands protect the vital units of heart, lungs, and upper viscera. As the bony basin of the pelvis, they guard and support the lower viscera.”Rolfing pages: 175/176Rolfing: Reestablishing the Natural Alignment and Structural Integration of the Human Body for Vitality and Well-Beingby Ida P. Rolf Ph.D. -- source link
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