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Newspaper Page Text
HOVFOOD BUILDS UP YOUR BODY
Historyjof the Things That Pass Down Our Throajts The $
wonaercui otory or i.utrraonr
The term "metabolism" is ap
plied to the changes in the his
Jtory of the food from the time it
enters the"' mouth until it is finally
broken down and excreted ftom
the body through the alimentary
tract, theskin the lungs or the
kidneys. Digestion is onlyjone df
the preliminary steps to' meta
bolism. Metabolism is composed, of two
distinct processes: First, the
buildingpf the particles of the
food into the body and the sup
plying of heat and energy by the
combustion of these particles
and, second, the breaking down
of thesevpartfcles and their-elim-ination.
The building up process
is called anabolism and the break
ing down and eliminating' process
is called catabolism.
'The building up of the tissues
of the body is a strictly chemical
process and one which is carried
on with such skill as to excite
continual wonder, even Nof the
professional chemist. By absorp
tion from the alimentary canal of
tne digested food, thafis the
liquified portion, thereis poured
into the bjood stream a mass of
material of the most heterogene
ous character; sugars, oils, pro
teoses, peptones and mineral mat
ters are carried ajong together.
As the blood strean is dis
tributed throughout the body,
modified by the liver and other
organs through which it paCsses
carries mto the tissues a well sup
plied table. These tissues have
the power of assimilating from
this blood stream the particles
peculiar to their own structure"
and of rejecting the others. Tn'e
sugaTs and fats which find theiF
way into the - blood are chfefiy0
burned in the finer tissues of the
body, namely, the capillaries, oy
comingpin contact, with oxygen in
conditions' which permit the" com-;t
bustion at low temperature. "
The products of this combiis-1
tion are carbonic acid and water.
The carbonic acid s carried to
the lungs and expelled through
expired air. The, Water is ex-v
creted through the skin and1
fhrough the kidneys. The nitro-
genous matter in the blood ,
stream is taken up by the various .
tissues of the body all of whichr
contain nitrqgen, and built into
the human structure to find its"
place in the muscles, skin, finger
nails, hair, tendens, the brain
nerves and also largely in the
The mineral matters in the
blood stream which are built into
the tissues of the body are prin
cipally lime and phosphorus.'
These are built largely 'into the
,bones "but are found to a certain
extent in the other tissues of the
body. ' v l
The fat tissuei of the body are .