<h2 id="id00081" style="margin-top: 4em">CHAPTER V.</h2>
<h4 id="id00082" style="margin-top: 2em">THE NERVOUS SYSTEM.</h4>
<p id="id00083">It will be noticed that the Western scientific theories regarding the
breath confine themselves to the effects of the absorption of oxygen,
and its use through the circulatory system, while the Yogi theory also
takes into consideration the absorption of Prana, and its
manifestation through the channels of the Nervous System. Before
proceeding further, it may be as well to take a hasty glance at the
Nervous System.</p>
<p id="id00084">The Nervous System of man is divided into two great systems, viz., the
Cerebro-Spinal System and the Sympathetic System. The Cerebro-Spinal
System consists of all that part of the Nervous System contained
within the cranial cavity and the spinal canal, viz., the brain and
the spinal cord, together with the nerves which branch off from the
same. This system presides over the functions of animal life known as
volition, sensation, etc. The Sympathetic System includes all that
part of the Nervous System located principally in the thoracic,
abdominal and pelvic cavities, and which is distributed to the
internal organs. It has control over the involuntary processes, such
as growth, nutrition, etc.</p>
<p id="id00085">The Cerebro-Spinal System attends to all the seeing, hearing, tasting,
smelling, feeling, etc. It sets things in motion; it is used by the
Ego to thinkāto manifest consciousness. It is the instrument with
which the Ego communicates with the outside world. This system may be
likened to a telephone system, with the brain as the central office,
and the spinal column and nerves as cable and wires respectively.</p>
<p id="id00086">The brain is a great mass of nerve tissue, and consists of three
parts, viz., the Cerebrum or brain proper, which occupies the upper,
front, middle and back portion of the skull; the Cerebellum, or
"little brain," which fills the lower and back portion of the skull;
and the Medulla Oblongata, which Is the broadened commencement of the
spinal cord, lying before and in front of the Cerebellum.</p>
<p id="id00087">The Cerebrum is the organ of that part of the mind which manifests
itself in intellectual action. The Cerebellum regulates the movements
of the voluntary muscles. The Medulla Oblongata is the upper enlarged
end of the spinal cord, and from it and the Cerebrum branch forth the
Cranial Nerves which reach to various parts of the head, to the organs
of special sense, and to some of the thoracic and abdominal organs,
and to the organs of respiration.</p>
<p id="id00088">The Spinal Cord, or spinal marrow, fills the spinal canal in the
vertebral column, or "backbone." It is a long mass of nerve tissue,
branching off at the several vertebrae to nerves communicating with
all parts of the body. The Spinal Cord is like a large telephone
cable, and the emerging nerves are like the private wires connecting
therewith.</p>
<p id="id00089">The Sympathetic Nervous System consists of a double chain of Ganglia
on the side of the Spinal column, and scattered ganglia in the head,
neck, chest and abdomen. (A ganglion is a mass of nervous matter
including nerve cells.) These ganglia are connected with each other by
filaments, and are also connected with the Cerebro-Spinal System by
motor and sensory nerves. From these ganglia numerous fibers branch
out to the organs of the body, blood vessels, etc. At various points,
the nerves meet together and form what are known as plexuses. The
Sympathetic System practically controls the involuntary processes,
such as circulation, respiration and digestion.</p>
<p id="id00090">The power or force transmitted from the brain to all parts of the body
by means of the nerves, is known to Western science as "nerve force,"
although the Yogi knows it to be a manifestation of Prana. In
character and rapidity it resembles the electric current. It will be
seen that without this "nerve force" the heart cannot beat; the blood
cannot circulate; the lungs cannot breathe; the various organs cannot
function; in fact the machinery of the body comes to a stop without
it. Nay more, even the brain cannot think without Prana be present.
When these facts are considered, the importance of the absorption of
Prana must be evident to all, and the Science of Breath assumes an
importance even greater than that accorded it by Western science.</p>
<p id="id00091">The Yogi teachings go further than does Western science, in one
important feature of the Nervous System. We allude to what Western
science terms the "Solar Plexus," and which it considers as merely one
of a series of certain matted nets of sympathetic nerves with their
ganglia found in various parts of the body. Yogi science teaches that
this Solar Plexus is really a most important part of the Nervous
System, and that it is a form of brain, playing one of the principal
parts in the human economy. Western science seems to be moving
gradually towards a recognition of this fact which has been known to
the Yogis of the East for centuries, and some recent Western writers
have termed the Solar Plexus the "Abdominal Brain." The Solar Plexus
is situated in the Epigastric region, just back of the "pit of the
stomach" on either side of the spinal column. It is composed of white
and gray brain matter, similar to that composing the other brains of
man. It has control of the main internal organs of man, and plays a
much more important part than is generally recognized. We will not go
into the Yogi theory regarding the Solar Plexus, further than to say
that they know it as the great central store-house of Prana. Men have
been known to be instantly killed by a severe blow over the Solar
Plexus, and prize fighters recognize its vulnerability and frequently
temporarily paralyze their opponents by a blow over this region.</p>
<p id="id00092">The name "Solar" is well bestowed on this "brain," as it radiates
strength and energy to all parts of the body, even the upper brains
depending largely upon it as a storehouse of Prana. Sooner or later
Western science will fully recognize the real function of the Solar
Plexus, and will accord to it a far more important place then it now
occupies in their text-books and teachings.</p>
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