The Wellington enterprise. [volume] (Wellington, Ohio) 1867-188?, 1884-02-13
The Tissues.

The tissues are those constituent
parts Of the body that may be separated
by skillful hand. The skin, covering
the whole surface of the body, is an ex-
tensive tissue. The mucous membrane
is tissue, lining all the inner organs.
These two are often called connective
tissues, a fibrous substance that connects
together all the various parts of the
body. This same connective tissue
covers all the muscles, bones, nerves,
blood vessels and other parts, Cover
ing so many different organs, it varies
in many respects and is adapted to the
organ it may cover. 1t may be
soft and elastic and so fitted to arteries
and veins that are constantly expand
ing. 1t covers the numberless nerves
and fits them for conveying messages
of various sorts. These tissues are
dense and non-elastic, as in the liga-
ments that bind the joints to each
other and then the tendons that join the
muscles to the bones. The cellular
tissue is composed of minute number
less cells that are found in every section
of the body. In these cells fat is de-
posted, and also water in dropsy. And,
finally, this connective tissue envelops
all the different organs, as the lungs,
kidneys and liver. All the muscles
move in sheaths, so constructed that
they move without friction when in
health.
The skin, the most extensive tissue,
is composed of two layers-the outer,
called the cuticle, and the inner, called
the cults. The former, or cuticle, is
composed of fattened cells closely
pressed together. THY are easily
separated in mass from the
cults, on which they rest. This
cults, or true skin, consists
of connective tissues and meshes of
minute nerves and blood vessels. These
minute parts form ridges, easily seen
on the surface of the skin, and espe-
cially on the palms Of the bands and
the soles Of the feet Between these
ridges are numerous canals leading
from the sweat glands that secrete
sweat, and then other canals leading
from the sebaceous glands that secrete
an oil to keep the skin soft and healthy.
Below the cults we find the cellular
tissue, so conspicuous on the outer sur
face of calves, lambs and other animals
hanging in the provision dealers stalls.
Below this tissue is the muscular tissue
that forms the flesh. This latter tissue,
or flesh, is composed of bundles of
fibers that easily separate and form
smaller fibers, as seen in boiled meat.
These bundles are found in masses of
various shapes and sizes, covered by
connective tissues and known as mus
cles. These muscles, acted upon by
nerves, contract. This wonderful
power of contraction becomes the
great power Of the body. In this
way the bones by the muscles are
moved in various ways. This action
of the muscle under the influence of
the nerves is seen when we bend the
naked arm. Grasp the upper arm and
lift up the lower arm and observe that
the large, soft mass on the fore part of
the upper arm hardens. This mass Of
muscles is by its upper part fastened to
bones near the shoulder joint and by its
lower end is fastened to one of tho
bones of the forearm near the elbow
Joint. When this muscle contracts un.
der the influence of the nerve and brain
it pulls the forearm towards the shoul-
der. The swelling and hardness of the
muscles, so apparent in its contraction,
becomes soft. The bones, or frame
work Of the body, are masses of con-
nective tissues, hardened by deposits of
the phosphate and carbonate Of lime.
In these bones may be found minute
openings through which numerous
blood tubes and nerves can pass.
It is the function Of the nervous It's
sue to control all movements of the
muscle. The two main centers Of the
nerve power are the brain and spinal
cord. Nerves spring from them and
communicate with every organ and
every tissue OF the body. The brain is
the center from which voluntary
movements of the body are regulated.
The spinal cord is the means by which
the mandates of the will are car
ried TO the muscles. On the brain de-
pends our power TO reason and will,
our power TO act, and our power TO ac-
quire knowledge and retain it. The
nervous system, then, should be kept
in state of efficiency. We can do
this chiefly by maintaining sound bod
lily health.-C. H. allen, NJ D., in West
eTn Rural.