[libribook.com] Traumatic Scar Tissue Management 1st Edition

Clinical Consideration
PSNS afferent myelinated fibers travel from the viscera to their cell bodies
located either in the sensory ganglia of the cranial nerves or in the posterior
root ganglia of the sacrospinal nerves. The central axons then enter the
CNS and take part in the formation of local reflex arcs or pass to higher
centers of the ANS. The location of the sensory ganglia gives rise to the
basic anatomical principle of craniosacral work – with intended outcomes
mediated by the PSNS (Upledger 1987, Frymann 1988, Schleip 2003a,
2003b, Dorko 2003, Minasny 2009).]
SNS
The SNS mediates activity associated with emergency or stress response,
commonly referred to as the fight, flight or freeze aspect of the nervous system.
The SNS facilitates activity such as accelerated heart rate, elevated blood
pressure and constriction of peripheral blood vessels when the need arises. Blood
from the skin and intestines is redirected to the brain, heart and skeletal muscle
to enhance chances of survival (e.g. fight or flight). The primary
neurotransmitter associated with the SNS is norepinephrine. Norepinephrine can
stimulate the adrenal medulla, triggering the release of noradrenalin and
adrenalin, which are known to prolong the effects of sympathetic stimulation.
The impact of prolonged sympathetic stimulation associated with trauma will be
covered in greater detail in Chapter 7.