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Medical ArticlesClub Foot
Children are not unfrequently born with this deformity in one ...
Indications For Esophagoscopy In Disease
Any persistent abnormal sensation or disturbance of function...
Diseases And Disturbances Of The Skin
Their Chief Causes. Skin troubles are of two main kinds accor...
If an epidemic prevails in the neighbourhood, or a case occurs...
Why People Get Sick
This is the Theory of Toxemia. A healthy body struggles conti...
Positive And Negative Manifestations
Acute diseases are to be regarded as electrically positive, a...
A foreign body lodged in the esophagus may prove quickly fat...
Often inflammation occurs in the centre of, or beneath, a mass...
Mineral Acids In Case Of Severe Sore-throat
In case the throat be very troublesome, there cannot be any o...
Quacks And Quackery Continued
An English physician, who practised during the early part o...
Ordinarily we are not aware of the beating of the heart, enorm...
This disease generally comes on at night, in hot weather, and...
Some most distressing troubles come as the result of frights. ...
Care Of The Nails
Importance of Clean Nails. On account of their constant use, ...
Apthae - Thrush
This is a disease peculiar to nursing children. The mouth bec...
Physics Of Aortic Lesions
Next in frequency to mitral insufficiency is aortic insuffici...
At Nauheim, under the direction of Dr. Theodore Schott, baths...
Baths And Bathing
Bathing as a Means of Cleanliness. It has been said that one ...
The Relative Position Of The Cranial Nasal Oral And Pharyngeal Cavities
On making a section (vertically through the median line) of t...
Period Of Eruption Or Appearing Of The Rash
Commonly, on the second day, towards evening, sometimes on th...
Category: THE SPEECH ORGANS
Source: A Handbook Of Health
The Sixth Sense. Though we usually speak of having five
senses,--sight, smell, hearing, touch, and taste,--we really have also a
sixth--the sense of direction, or of balance. The machine of this
sense is comparatively simple, being made up of three tiny curved tubes,
which, from their shape, are called the semi-circular canals. These
are buried in the same bone of the skull as the internal ear, and
so close to it that they were at one time described as part of it.
These little canals are three in number, one for each of the
dimensions--length, breadth, and thickness,--so that whichever way the
head or body is moved,--backward and forward, up and down, or from side
to side,--the fluid with which they are filled will change its level in
one of them, just as the bead does in the carpenter's spirit-level
that you can find in any tool shop. The delicate nerve twigs that run
out into the fluid in these tiny canals are gathered together into a
bundle, or nerve-cable, which runs back to the part of the brain known
as the cerebellum or hind-brain, which has most to do with controlling
the balance and movements of our bodies.
It is the disturbance set up in these spirit-level canals by the
pitching and rolling of a ship, which makes us seasick. Neither the
stomach, nor anything that we may have eaten, has anything to do with
it. In the same way we sometimes become sick and dizzy from swinging too
long or too high, or from riding on the cars.
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