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Cholera Morbus

Keep the patient still as possible on his back. Use A D curre...

Emergencies

5. Cardiac Emergency Drugs.--Besides some of the drugs alread...

Lungs Congestion Of The

Treatment as below. Read preceding and succeeding articles. ...

The Contagion Of Scarlatina Very Active

The _contagion_ of scarlatina is very active, and adheres for...

Rubbing Sheet Substitute For The Half-bath

It cannot be difficult to procure a wash-tub. Should you be s...

Running The Human Automobile

The Body-Automobile. If you were to start to-morrow morning...

Enlargement Or Ossification Of The Heart

Treat these two affections in the same way. Take the A D curr...

Factors Increasing The Blood Pressure

With normal heart and arteries, exertion and exercise should ...

Stone

See Gravel. ...

Ulcers

An ulcer is an "eating sore": that is, a sore containing matte...

Inflammation Of The Brain

_Brain Fever._ Though this affection is not strictly what ...

Treatment

Acute esophagitis calls for rest in bed, sterile liquid food...

Chronic Endocarditis

It is not easy to decide just whew all acute endocarditis has...

Decline

See Consumption. ...

Bathing

Cold baths, while greatly to be recommended to those who are s...

Other Lesions

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Blood Purifying

Fever arising from bad state of the blood may be treated by ca...

Pulsus Alternans

By this term is meant that condition of pulse in which, thoug...

The Blood-mesh Of The Skin

The Blood Vessels under the Skin. Not merely the nails and th...

Additional Rules For The Treatment Of Eruptive Diseases

In all these eruptive diseases, especially small-pox, all I h...



Our Spirit-levels





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.





Next: The Speech Organs

Previous: The Ear



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