Fascia time line
A subject that we keep returning to when investigating the properties of Fascia and it's relationship with movement is 'at what point in our evolution did fascia appear?' Earlier blogs refer to the jellyfish as being an early form of a Fascial organism, certainly the jelly substance in the jelly fish is a similar to fascia, but not exactly the same as the substance we find in our own body.
Recently I have been reading Phillip Bench's book 'Muscles and Meridians' in it he has answered this question of when fascia evolved.
He also refers to the. 'baupläne' or body plan which represents the rootstock or lineage of animals. The baupläne of our own species and the evolution of fascia is closely linked.
Let's look at the baupläne first.
Another way of explaining the concept of baupläne is to consider it as an operating system around which animal life is constructed. The baupläne sets parameters for all subsequent evolutionary development, to which that animal must refer.
All contemporary animal life on Earth coalesces down to 35-38 fundamental body plans or baupläne. Roughly these body plans correspond to phyla levels of classification used by zoologists. To delineate one body plan from another, crucial constructional features are looked for. Each body plan has a suite of characteristics, which interlock to form a biological operating system. Examples of constructional features looked for are, type of skeleton, symmetry, no of appendages (limbs), cleavage patterns (how our cells divide after fertilisation), segmentation and body cavity (Arthur, 1997).
By studying an animals constructional patterning you can gain insight into it's relationship with other members of the animal kingdom.
About 7 billion years ago multicellular animals emerged, these were primitive animals with no blood, gut tube or nervous system - slimes. Between 542 and 489 million years ago, in what we now refer to as the Cambrian age, the environmental conditions and the challenges for life that they presented, led to an explosion of larger multicellular animals and a bewildering array of baupläne evolved (McMenamin and McMenamin, 1990). The most amazing evolutionary change in animal life was the change from slime to animals, which could move at will, and with movement the concept of choice developed.
What happened to our baupläne to enable this most fundamental evolution in animal life? To understand this we have to consider the miracle of conception and the complex and still not fully understood development of life, embryology. It is at the very earliest point of an animals life, just weeks after fertilisation that the evolutionary change occurred. The baupläne's constructional feature of cleavage, the process, which follows fertilisation, creating mulicelluarity, underwent a significant evolution, which allowed movement to develop.
Around 500 million years ago a new animal baupläne emerged from the slime which had an extra embryonic cell layer, this 3rd layer is called the mesoderm and is sandwiched between the 2 older layers called the endoderm and ectoderm (Raff, 1996).
It is the mesoderm, which produces the tissues that facilitate movement. In Tom Myer's book Anatomy Trains, 3rd edition, 2013, he identifies the emergence of fascia fibres from out of the mesoderm at the 14th day after fertilisation, before both the nervous system and our brain and before the digestive and the enteric (emotions??) system form. The instinctive movement system acting upon signals from the environment predates both the systems we place a higher importance upon.
This evolutionary milestone, the formation of the mesoderm and the subsequent formation of fascia in the growing embryo, provides us with an answer we have been searching for.
The reason fascia formed was to facilitate movement in response to the environment. So to properly understand fascia, it's properties and it's possibilities we have to refer back to it's origins in our baupläne.
Movement creates choice, and the point of movement involves an appraisal of the environment. The animal can move towards food and move away from danger. From this beginning our bodies evolved.
Tracey Mellor
©March 2014
Ref' muscles and meridians , Phillip Bench 2010
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