The shoulder & pectoral girdle has 3 bones, 3 joints, and 1 articulation. The chest cavity, or thorax, consists of 12 vertebrae connected to 12 pairs of ribs which connects to the sternum in the front of the body. The thorax forms an elastic but firm cavity that protects vital organs.
from Health and Fitness Articles from EzineArticles.com http://bit.ly/2HuEsr0
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