Full resolution (JPEG) - On this page / på denna sida - Active Movements
<< prev. page << föreg. sida << >> nästa sida >> next page >>
Below is the raw OCR text
from the above scanned image.
Do you see an error? Proofread the page now!
Här nedan syns maskintolkade texten från faksimilbilden ovan.
Ser du något fel? Korrekturläs sidan nu!
This page has never been proofread. / Denna sida har aldrig korrekturlästs.
ACTIVE MOVEMENTS.
0
" Muscles are most perfect machines, but they are distinguished
from all machines of human manufacture by the fact that by
frequent exercise they become stronger, and are thereby capable
of accomplishing more work " (Dubois Eeymond).
When a muscle contracts, the veins and lymphatics are
necessarily compressed, and more or less emptied, while as soon
as the muscle relaxes there is an increased flow of oxygenated
blood into it, and in consequence greater nourishment and growth
of the existing muscular fibres ; and if the contraction is
repeated time after time, taking care, of course, that it is always
kept within physiological limits, so that the muscle is not
exhausted, a development of new muscular fibres takes place.
As a consequence of these two processes, the muscle becomes
stronger and capable of doing more work.
All active movements have the effect of building up and
strengthening the tissues.
But at the same time that the active movements have a local
action, they have also a general influence.
It is evident that, having a given amount of blood in the
body, when an increased flow to one part takes place, there must
be a corresponding decrease of blood in the other parts of the
body. It is for this purpose we use the active movements, viz.
to produce metastasis.
As already stated, the active movements may be
1. Free, i.e. movements executed by the patient without any
external help whatever.
<< prev. page << föreg. sida << >> nästa sida >> next page >>
