must ever bear in mind the cellular construction of
the human body. how to buy doxycycline Each individual is but a conglom-
eration of cells ; as each cell is, so is the individual ;
he is the cells, the cells are he.
THE CELL doctrine.
Xearly a half century has passed since Vir-
chow. in his Cellular Pathology, expressed the
idea that each animal appeared as a sum of vital
units, doxycycline online each of which exhibited all the characteristics
belonging to life. Xot only that, but he maintained
the thought that each cell sprang from a preceding
or parent cell by division, budding or otherwise :
he believed that the character and imity of life were
referable not to any single locality of a higher or-
ganization — for example, the brain of man — but
rather to the definite, get doxycycline constantly recurring arrange-
ment which each single element bears to itself.
Taking the correctness of this view for granted,
the composition of a large body of the socalled in-
dividual must always depend upon a social arrange-
ment ; in fact, it represents a social organism in
which there is a mass of single existences related to
one another in such a way that every element has
its own special activity, and each, when excited to
activity by other parts, does its work and performs
its function of and by itself. If this idea is correct
it must apply not only to the body at large, but also
to each organ, to the nervous system, even to each
cell entering into the composition of any tissue.
During the last doxycycline 100mg few years it has been possible to doxycycline cheap
approach the nervous system with instruments of
great precision, with better recorded observations of
disease of the nervous system (testing and record-
ing after condensor doxycycline mg discharges on injured nerves),
aided b}' the refutation or confirmation of pre-
viously existing data, thereby arriving at the newer
conception of the neuron as a unit. In fact, the
study of the functional units in the nervous system
could be buy doxycycline approached satisfactorily only after it had
been clearly shown that the nervous system, like
all other tissues, consisted of elements more or doxycycline to buy less
isolated and independent, and connected directly
with one another apparently only by contact, con-
crescence, or protoplasmic bridges, and after we had
learned to recognize the different structures which
belonged to the single elements.
THE NERVOUS doxycycline purchase online SYSTEM, CENTRAL AND PERIPHEIL.\L.
In describing the nervous system, for convenience
of comprehension we separate the entire system
622
GEYSER: DIAGNOSIS OF CHRONIC CONDITIONS.
into two general divisions, yet it must ever be borne
in mind that these two portions are anatomically,
as well as physiologically, one system. The central
nervous system includes the cerebrum, cerebellum,
and the jions, or all of that portion enclosed within
the cranium proper, while the peripheral portion in-
1 cm how to get doxycycline Sody -/Lxo„ra.„„>s«^ -;»,,,, f.„.
tntt»n\l.Bttlt5 \j\X ietu not
^
^iT
Flc. 1. — The ganglion cell with its dendrons and doxycycline order axis cylinder.
eludes the spinal cord, the nerves, and the sympa-
thetic system. By virtue of its continuity, the ner-
vous system brings into connection all the other
systems of the body. Conforming, as it does, in
shape to where to get doxycycline the framework of the body, its branches
extend to all parts. These branches form the path-
ways over which the nerve impulses travel toward
the where can i get doxycycline central system, and, in consequence of the im-
pulses 100 mg doxycycline received, there pass out from the central
system other impulses to the muscles and glands.
In order doxycycline 100 to maintain harmony between the activities
of how can i get doxycycline the several systems composing the body, where can i buy doxycycline it is at
once doxycycline where to buy apparent purchase doxycycline that the pathways leading to the cen-
tral nervous system, as well as the paths conducting
impulses from the centre to the periphery, must be
in a normal state to perform their particular func-
tion.
A SHORT REVIEW OF THE ANATOMY OF A NEURON.
By the term neuron we understand the entire
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