Final answer:
The pectoral fascia serves as a layer of connective tissue that contributes to the functioning of the musculoskeletal system but does not directly influence peripheral motor coordination.
Step-by-step explanation:
The connection between pectoral fascia and peripheral motor coordination does not involve direct regulation of blood flow to the muscles, support of respiratory functions, or determination of bone density. Rather, it is indirectly related to how muscles and their fascicles work together with the nervous system to coordinate movements. When considering the functions of the deltoid muscle and its fascicle arrangement, we know that specific stimulation by the nervous system can alter the direction of muscle pull, which indicates a connection with peripheral motor coordination. However, the pectoral fascia more specifically serves as a layer of connective tissue, contributing to the overall functioning of the musculoskeletal system, such as muscle attachment and force transmission, but does not directly influence peripheral motor coordination.