Mower County transcript. [volume] (Lansing, Minn.) 1868-1915, 1881-11-30

10 sugar. The food is now carried by the
tongue and cheeks to the back part of the
mouth. Then it is seized by the muscles
Of the throat and carried beyond our con-
troll. The Gsophagns, or tube that car
ries our food to the stomach, contracts
above while it is lax below, and thus, the
food is carried into the stomach by a ser.
les of worm-like movements. The stom-
ach Is an irregular expansion of the
digestive tube. 1t holds about :hree
pin,s, but is capable of some distensiOn.
1t is composed of three layers or muscu-
lar coats, the outer or serons membrane,
the inner or mucous membrane and
stout muscular layer between. This has
circular and longitudinal muscles, which,
and produces motion called
the peristaltic movement. When
the food. enters the stomach, the
veins swell and the gastric juice is Sc
creted, This juice acts upon the albumi-
nous part of,he food The flow ofthe gastric
juice is stopped by excitement or by taxi
ing cold water. 1t contains a principle
called pepsin. The food is here changed
into chyme. The food, having been acted
upon by the gastric juice, passes through
the pylorus into the upper part of the small
intestine, the duodenum. Here it is act.
ed upon by the bile and panereatic juice.
The bile IS secre,ed by the liver, the
largest gland in the body. 1t is situated
on the left side just below the diaphram.
The bile is of golden color and when
not used is stored in the gal!cyst. Its as
ton upon the food Is necessary to life
but is not understood. The panereas OF
sweet-bread lies back of the stomach and
is about the size of the hand. 1t secretes
the panereatic juice The panereati<
juice contains principle called pauerea
tin which breaks the fat of the food into
myriads of small pieces. The food now
called chy]e, pass es on in the small intes
tine, which is small tube about
twenty. five feet long A part of the nitro
genous food, while in the stomach, wa
absorbed by the veins. This part Of thu
food was carried to the liver by the porta
vein. In the small intestine the carbonace
ous and the remainder of the heterogeneous
food is absorbed by the lac
teals. These take the food to the lynn
phatics, which carry it to the thoracit
duct. The thoracic duct carries the foot
to the lett subclavlon vein, which emp
ties into the venacava descending. Thu
food carried to the liver enters the vena
cava ascending, which unites with IT,
venacava descending and empties into tn
right aurlcle of the heart. TIL
food, now mixed with the bleot
flows through the tricuspld valv
into the right ventricle. 1t the'
flows out of the semi-lunar valves int
the pulmonary artery to the lungs. Her
it is purified in the cells Of the lungs b.
receiving oxygen for csrbonic acid ga
and other impurities. 1t flows bacl
through the pulmonary vein into the LEI
auricle, then through the b
cuspid valve into the left ventricle, the1
through the sem,-lanar valve into tn
aorta. The food carried by the blood in
to the aorta, IS taken by an arter.
branching from the aorta to the head
The blood then flows to the brain where
the oxygen in the blood taken into til
capillaries of tue brain, is exchanged 70
the waste matter. The food is then form
ed into cells which form part of the brai
to replace the waste matter taken out.