The layers we are concerned about in the bodywork sense are the superficial and deep layers of fascia. For comprehension purposes, it is easier to perceive and study these layers as separated within the body, but remember they are all interconnected, and anatomically, the layers are difficult to distinguish from one another. There is no space between the layers and filled with fascia.
Superficial Layer (The Sleeve)
The superficial layer is right underneath the skin. To get a feel for this layer, just pinch at the skin on the back of your hand. The functions are mostly for protective and supportive purposes. It is protective in a sense that it provides a physical barrier against foreign substances from the body, prevents spread of infection, etc. As for its supportive purpose, it offers structural support to organs and tissues of the body. It serves as a passageway mostly for nerve and blood vessels. It is free of any attachments and looks like honeycombedchain-links that invests in the deeper layers of fascia.
Deep Layer (The Core)
The deep fascia individuates and also keeps muscle groups together within the body. The deeper fascia invests into every muscle group, every individual muscle, and every individual muscle fiber. It is important to keep in mind that muscles are used as landmarks to refer to locations throughout the body. A better term would be myofascial (‘myo’ = muscle, ‘fascia’ = band or bandage) structure because every structure is embedded in fascia.
These deeper layers blend into and form many specializations of connective tissue such as aponeuroses, ligaments, tendons, interosseus membranes, intermuscular septa, retinaculae, joint capsules, synovial sheaths, bursae, adipose tissue, fibrocartilage, hyaline cartilage, periosteum, and bone.
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As a break from anatomy and medical terms, an orange serves as a perfect analogy for the fascial layers reorganized and balanced throughout the Structural Integration 10-series. Next time you peel an orange, take a look at the white pith, the white stuff underneath the peel. You can think of this as the superficial layer of our bodies. Interestingly enough, the similarities between pith in plants and fascia in humans are uncanny. Pith functions as nutrient storage and transport throughout plants and one of the vital functions of fascia is its role supplying vital nutrients by means of the vascular system and helping to remove metabolic waste products.
After you’ve peeled the entire orange, the fuzzy white pith keeps every individual slice together and keeps the entire fruit whole all at once. The deeper fascia acts in a similar way, differentiating each muscle group by its function, but also connecting the structures to each other.[/fusion_builder_column][/fusion_builder_row][/fusion_builder_container]