The portion of the Sonora Desert which lies in the Southwestern United States is the most populated area within the region. Six of the top ten major population centers of the region are found within its borders: Phoenix, Tucson, Mesa, Chandler, Glendale, and Scottsdale, all in Arizona.
Insertion. Insertion. 1. (Science: anatomy) The place of attachment, as of a muscle to the bone which it moves. 2. (Science: genetics) a rare nonreciprocal translocation involving three breaks in which a segment is removed from one chromosome and then inserted into a broken region of a nonhomologous chromosome.
Anatomical terms of muscle - Form. 1  The insertion and origin of a muscle are the two places where it is anchored, one at each end. 2  The origin of a muscle is the bone, typically proximal, which has greater mass and is more stable during a contraction than a muscle's insertion.