[quote]PederLustzo wrote:
Hi,
different parts of the “deep back muscles” or “erector spinae” are involved in extension (looking up motion) of the neck. if you really mean the neck you could talk about intraspinalis, intertransversius etc. but all those muscles play a rather minor role in active motion but a rather stabilizers, I do believe what you are look for is the:
M. sternocleidomastoideus
Which although situated at the sites and front of the neck STILL pulls it back and is the stronges head extensor (looking-up-muscle). If you look at the mastoid (where this muscle is attached) you will notice that it is behind the articulatory axis, this explains why a muscle situated in front pulls the head acutaly back.
Hope this is helpfull.[/quote]
As for what is retracted, the top of the neck and the head are retracted together. I have seen the motion referred to as neck retraction, as head retraction, and as cervical retraction.
Yes, I’m not asking about extension (looking up.)
My chiropractor also said the SCM was involved (his overall answer was really not very specific but basically came down to saying that it was a complicated interplay which he didn’t specify but mostly of stabilizers.)
It doesn’t feel like the SCM when I’m doing it though there may be some stabilization from it. However, I don’t take that as proving it’s not the case.
I’ve always seen it listed as a neck flexor.
Again, your post provided better search terms.
While I had a problem with the scalenes doing it based on that what I feel as my “scalenes” obviously are not involved, I think that what I call my scalenes are only the anterior scalenes. The posterior scalenes seemed like a great choice but I found a source saying they caused flexion.
However, now with the better search terms I find the statement:
"The major muscles of neck retraction are the scalenes, but others are likely to be involved.
… After that, I use a combination of movement actions combined into a single action with a unified purpose: to contract, not just the scalenes, but other parts of the body in a way that gives a feel for how to control the act of retraction. Specificity is necessary, as without it, your client is likely to by-pass the scalenes, over which he has little control, and substitute the sterno-cleido-mastoid or other muscles, over which he has better control."