Bodily changes in pain, hunger, fear, and rage : $b an account of recent researches into the function of emotional excitementCannon, Walter B. (Walter Bradford)
Science
Bodily changes in pain, hunger, fear, and rage : $b an account of recent researches into the function of emotional excitement
Cannon, Walter B. (Walter Bradford)
Emotions; Mental health; Mind and body
4.10--5 minutes
.16--4.5 “
.25 to .28 Stimulation of left splanchnic (glandless).
.30--4.5 minutes
.35--4.5 “
.40--7.5 “
.49 to .51 Stimulation of right splanchnic.
.55--4.5 minutes
5.00--2.5 “
.14--6 “
.23 to .25 Stimulation of right splanchnic.
.26--6 minutes
.33--4.5 “
.38--3.5 “
.43--4.5 “
.49--5 “
.55--6 “
The results in this experiment are represented graphically in Fig.
31.
[Illustration: Figure 31.--Results of stimulating the left
splanchnic nerves, 4:25-:28, after removal of the left adrenal
gland; and of stimulating the right splanchnic nerves, 4:49-:51
and 5:23-:25, with right adrenal gland present.]
Elliott’s evidence that in the cat the splanchnic innervation of the
adrenals is not crossed has already been mentioned. If the gland
is removed on one side, therefore, stimulation of the nerves on
that side causes no discharge from the opposite gland. As the above
experiments clearly show, splanchnic stimulation on the glandless
side results in no shortening of the coagulation time; whereas,
in the same animals, stimulation of the nerves on the other side
(still connected with the adrenal gland) produces a sharp hastening
of the clotting process.
The splanchnics innervate the intestines and liver even though the
adrenal gland is removed. The foregoing experiments indicate that
the nerve impulses delivered to these organs do not influence them
in any direct manner to accelerate the speed of coagulation. Indeed,
in one of the experiments (Dec. 4, see Fig. 31) a high reading about
ten minutes after splanchnic stimulation on the glandless side
suggests the possibility of an opposite effect. Direct stimulation
of the hepatic nerves on one occasion was followed by a change of
the clotting time from 4.5, 5, 4.5, 4.5 minutes during twenty-five
minutes before stimulation to 4.5, 7, and 6 minutes during twenty
minutes after stimulation.
Since with the adrenals present stimulation of hepatic nerves
induces alteration of glycogen in the liver and quick increase of
blood sugar,[110] just as splanchnic stimulation does, the failure
of the blood to clot faster after stimulation of the hepatic nerves
confirms the evidence already offered that faster clotting when
adrenin is increased in the blood is not due to a larger amount of
sugar present (see p. 159).
The liver and intestines cannot be made to shorten clotting time by
stimulation of their nerves, but, as has already been shown (see
p. 157), neither can adrenin act by itself to hasten the clotting
process. Apparently the effect is produced by coöperation between
the adrenals and the liver (and possibly also the intestines).
Somewhat similar coöperation is noted in the organization of sugar
metabolism; splanchnic stimulation in the absence of the adrenal
glands does not increase blood sugar,[111] and in the absence of
the liver adrenin is without influence.[112]
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Elsewhere in the archive
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account