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Related to pectoral region: lateral pectoral region
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Humans usually have breasts with associated nipple areolar complexes (which have different embryological development) only in the pectoral region as the rest of the embryological milk line disappears soon after its development.
The first 100 or so pages present the results of their analyses, and the following 500 pages comprise comparative notes presented in tables pertaining to muscles of the head, neck, pectoral region, and the upper limb.