I thought this message board may be interested in the following link regarding the basics (maybe for med and biology students) of hair growth. I got interested in the anagen stage, which I've learned is the growth stage. It's the utilization of hair growth biochemistry that we have to work on, seems to me, in order to extend maximum hair length past the natural terminal length for any given individual.
It's quite technical, so I'll have to read it again myself - perhaps several times - in order to come to a fair understanding of the how and why of individual scalp hair growth rate and terminal length.
OM
The hair papilla is formed from
mesodermal cells. Completion of the terminal pilosebaceous unit requires:
(1) a vascular network
(2) nerve tissues to surround the follicle and
(3) the arrector pill muscle being inserted...
... into the wall of the follicle.
......he..he...
..thanks for the link!
I know you quoted directly from the site, but the correct term is arrector pili, not arrector pill.
The arrector pili muscle is the muscle that makes a goose bump and makes your hair stand on end.
...he..he......I thought 'pill' sounded a bit weird!
I have felt the hair stand up on my arms but I wonder whether
or not this happens on the scalp.
Guess it does but I've never experienced it.
Have you ever had that odd sensation when you slept on your hair wrong the follicle set the wrong way? It feels kind of the same as that. Of course the hair strands are not strong enough to stand up completely -- only the base stands up.
I have also had the experience of my hair standing on end due to local weather conditions (we sought shelter immediately).
As if we don't have more here than we really wanted to know . . . being the resident Latin teacher, thought I'd translate.
Arrector pili = the maker of the hair to rise up. In other words, that which makes a goose bump. :)
Robert