Fitness with Yoga Exercises - Energy Meditation Zeal Rigour Excercise

As I am on the subject of reflex centres, I should like to say a few words about the Shaktis that are said to preside over the six important plexuses (Chakras) of the sympathetic portion of the autonomic nervous system. Every Chakra is said to have its subsidiary Shakti in addition to the general Shakti – Kundalini – which rules all the Chakras.
The Shakti of a Chakra exerts an inhibitory influence through a subsidiary nerve centre in the spinal cord, and controls unconsciously the activity of the organs excited by fibres of the sympathetic plexuses.
The Muladahara-chakra (the pelvic plexus) and the Swadhistana-chakra (the hypogastric plexus) have ‘Dakini’ and ‘Rakini’ respectively as their controlling Shaktis. These Shaktis are comparable with the efferent impulses generated through the subsidiary nerve centres in lumbar region (Apana-prana) along the fibres of the pelvic nerve, otherwise called nervierigens. This nerve is chiefly concerned with the stimulation of the external organs of generation (whence its name “nervi-erigens”). It also sends out fibres to the musculature of the colon, rectum and bladder.
Manipura-chakra (the plexus of coeliac-axis) is ruled by the Shakti ‘Lakhini’. She is said to be four-armed. This Shakti is the efferent impulse generated along the three or four splanchenic nerves through the auxiliary centres in the thoracic lumbar region of the spinal cord (Samana-prana). These nerves send inhibitory fibres to the stomach and the intestine and also to the secretory, and sensory fibres to the abdominal organs.
The Shakti presiding over the Anahata-chakra is ‘Kakini’. This Shakti is the efferent impulse generated along the fibres of the thoracic- spinal nerves through a subsidiary centre in the upper thoracic region of the spinal cord. These fibres control the heart, the lungs and aorta. The main nerve regulating the functions of the heart, the lungs and the aorta is the vagus, which has its centre in the medulla oblongata. But now it has been proved, that even if both the vagi are cut, so as to do away with the controlling influence on these organs, a preliminary state of excitation occurs which is brought about by the sympathetic coming into action producing acceleration for a short time. This acceleration is immediately followed by the normal automatic working of these organs, showing thereby the possibility of another controlling nerve centre in the spinal cord just below the medulla (Prana-reflex).
Vishuddhi-chakra is presided over by the Shakti ‘Shakini’. This is the efferent impulse generated by the cervical nerves and also by the branches of the Vagus through the nerve centre in the medulla; both the above Shaktis are located in the region of Prana proper. This Shakti is said ti reside in the region of the moon, which appears to me to be the ventricular cavity in the brain. It is also said that the nectar (the cerebro-spinal fluid) is constantly dropping on the head of this Shakti and that she is seated on the bone, i.e., on the superior surface of the base of the skull. The last Chakra, Ajna, is controlled by the Shakti ‘Hakini’, i.e., the efferent impulse generated along the fibres of the oculo-motor nerve through a centre in the thalamus. This Shakti is said to reside in the marrow (majjastha) of the brain. Elsewhere, it is said to reside in the Chakra (Chakrastha), i.e., Brahma-chakra which we know to be the cerebrum. It is said to be white in colour. So is the thalamus, the sensory basal ganglion in the brain.