The fluid is driven on by muscular contractions until the feet are fully extended, and again driven back when the feet are retracted.
He noted, also, that occasionally the contractions did not occur, in spite of the fulfilment of the conditions mentioned.
Strong contractions took place in every muscle of the limb, and at the very moment when the sparks appeared, the animal was seized as it were with tetanus.
The blood is circulated through the arteries and veins in the body by the contractions of the heart, but the lymphatic system does not have a pump.
The blood is pumped through the body by the heart, but the lymphatic system, lacking a heart, requires muscular contractions to move from the extremities of the body to the central cavity.
Lymphatic fluid is moved by the contractionsof the muscles, primarily those of the arms and legs.
After this date the exact formation of the signs of contractions was less strictly observed, and the system deteriorated together with the decline of handwriting.
As far back as material is available for comparison, it appears that abbreviations and contractions in Latin MSS.
By the 11th century the system of Latin contractions had been reduced to exact rules; and from this time onwards it was universally practised.
Some idea of them may be obtained from the alternating expansions and compressions or dilations and contractions in the heart and lungs, called in the heart systole and diastole, and in the lungs respirations.
These are reciprocal extensions and retractions or expansions and contractions of their lobes.
He says the movement of the blood is entirely due to the contractions of the walls of the heart--that it is the propelling apparatus--and all recent investigation tends to show that he was perfectly right.
In other words, that, although it will increase the contractions when already present, it will not always renew them when they are suspended.
When there exists a real hysteria, the contractions are not confined to the intestinal regions, but invade the neighbouring parts; (quere, which of them contract?
The sounds are produced by short, rapid contractions of the diaphragm.
Remember that with all the care and skill which can be used, contractions will sometimes take place.
The contractions of striated muscle fibers are effected, in the natural course of organic life, only by the influence of the nerves.
As a result the hairs which are swallowed are carried around by the contractions of the stomach and gradually assume the form of a small pellet or ball.
The tail may at times be gently raised and contractions of the muscle (accelerator urinæ) beneath the anus (Pl.
The frequent passage of urine, accompanied by contractions of the womb and vagina and a profuse secretion from their surfaces, leads to the expulsion of the semen after it has been lodged in the genital passages.
In spasm of the neck of the bladder the male animal may stand with the tail slightly raised and making rhythmical contractions of the muscle beneath the anus (accelerator urinæ) (see Pl.
Affections of the chest which prevent due aeration of the blood induce contractions of the womb, as shown experimentally by Brown-Sequard.
In the interval between the contractions these valves hang down into the ventricles.
Fortunately the desire to breathe, roused by the circulation of the venous blood and the reflex action from the wet and chilling skin, usually starts the contractions of the diaphragm at once and life is insured.
The muscle becomes weak, the heart contractions are insufficient, and heart weakness is shown by general weakness, shortness of breath, and weak, rapid pulse.
Contractions and combinations are not merely frequent, but almost universal.
The passage of the yolk from the external to the internal yolk-sack is probably largely due to the contractions of the former.
Rabl holds that there is no contractile dorsal sinus, but that the appearance of contraction there is due to the contractions of the foot.
By its contractions it takes up the yolk elements which surround the embryo, and the rapid growth of the embryo no doubt takes place at their expense.
The contractions of the active protoplasm, which effect this continual cleavage of the cells, meet a greater resistance in the lower vegetal half from the passive deutoplasm than in the upper animal half.
The inert mass of the passive food-yelk is so large in these cases that the protoplasmic contractions of the active yelk cannot effect any further cleavage.
Saussure has here given us an example of a calcareous Braccia, as he calls it, but which is rather a pudding stone, with veins or contractions of the mass.
These contractionsof animal fibres are afterwards excited or repeated by the sensorial powers of sensation, volition, or association, as explained at large in Zoonomia, Vol.
The stimulus of bodies external to the moving organ is the remote cause of the original contractions of animal fibres.
In fact, goose-fleshing is caused by contractions of these smooth muscles just under the skin.
These contractions form and disappear quite regularly at the rate of several a minute.
Both the digestion and the absorption are aided by a kind of churning motion made up of a series of contractions spaced about an inch apart along the part of the intestine where the food mass lies.
They are found also in the walls of the small blood vessels where their contractions or relaxations can change the caliber of the vessels, and so affect the amount of blood passing through them.
These contractions cannot occur except when the wall of the stomach is in a certain state of tension.
The digesting food is moved along the small intestine by contractions of its muscular wall, which travel along slowly in the form of a wave, very much as the wave of swallowing passes down the neck of a cow or horse.
It is aroused by spasmodic contractions of the stomach.
Any of these acts, as stated in Chapter VIII, requires the accurate timing and accurate grading of the contractions of a great many different muscles.
It is at this time that the contractions of the stomach wall, which we recognize as hunger, begin to come on.
Finally there is some doubt as to whether the contractionsof the muscles themselves are the same.
These contractions and relaxations of the blood vessels are performed by movements of the smooth muscles.
The food is moved along the alimentary canal, from the stomach downward, by successive contractionsof the muscular walls of the intestines, known as peristaltic movements, which occur with great regularity during digestion.
It is experienced simultaneously with the occurrence of the rhythmical muscular contractions which have previously been described.
The contractions of the affected muscles occur rhythmically, the stimulation of the ejaculation centre giving rise to a series of contractions alternating with relaxations.
There are certain cases, and these in young persons of both sexes, in which typical rhythmical muscular contractions take place in the child, although no ejaculated fluid is discoverable.
The répa consist of certain contractions of consonants and other signs used in composition.
Involuntary and unconscious contractions of the laryngeal muscles, somewhat similar to those under consideration, are well known to experimental psychologists.
In one sense the excessive muscular contractionsare involuntary; yet it would not be easy to define where the voluntary element of the contractions leaves off.
Contractions of the Throat Muscles, caused by Attention to the Throat When a physician attempts to examine a child's throat, the tendency of the throat muscles to this form of involuntary contractions is apt to be evidenced.
True, it is known what these muscles are, and what effect the combined contractions of any group would have on the position of the hand.
But these contractionscan be regulated by the actions of other sets of muscles, viz.
What is meant by saying that the muscularcontractions are performed without conscious guidance?
The vocal cords respond to the effective air pressure; they are not affected in any way by the opposed contractions of the breath muscles.
The precise nature of the muscular contractions of tone-production, whether correct or incorrect, is not known.
Contractions of Muscles due to the Radiation of Nerve Impulse A voluntary exertion of some of the muscles of a member sometimes causes the involuntary contraction of all the other muscles of the part.
Involuntary muscular contractionsoften occur as reflex actions without any direct or tactual irritation of the sensory nerve endings.
The muscular contractions in turn are guided by the demands of the mental ear.
Whilst these contractions of the central capsule are largely due to differentiated muscle-like threads of endoplasm (myophanes), this appears to be but rarely the case with the contractions of the extracapsulum (e.
The current should be of sufficient intensity to produce energetic but not painful contractions of the abdominal parietes.
In the first three baths the galvanic current was employed exclusively, the muscles and tendons being in too tender a condition to bear the contractions induced by the faradic current.
When too strong a faradic current however is incautiously administered, the resulting muscular contractions are accompanied by an amount of local pain proportioned to the violence of the contractions.
Temperature of water | Number of contractions (Fahr.
That in all cases the tetanus is due to summation ofcontractions may be very prettily shown by the following experiment.
If the strength of the induction shocks had been much greater than it was, all the contractions would have become strong contractions, and tetanus would have been the result.
The first faint marginal contraction was confined to the immediate vicinity of the prepotent lithocyst, and all subsequent contractions continued to be so for the next three minutes.
The nectocalyx is now responsive to stimuli applied at the tentacles, and sometimes two or three contractions will follow such a stimulus, as if the spontaneity of the animal were slightly aroused by the irritation.
Occasionally, also, rhythmical shivering contractions may be seen superimposed on the general tonic contraction, either in a part or over the whole of the contractile tissues.
Thus, I have seen responsive contractions of the whole umbrella follow upon the exceedingly slight stimulus caused by a single drop of sea-water let fall upon the irritable surface from the height of one inch.
During the next half-minute the ordinary contractions become progressively weaker, until they fade away into mere twitching convulsions, which affect different parts of the bell irregularly.
Contractions now began to penetrate round the margin, and in eight minutes from the restoration had gone all the way round, the rate of their rhythm meanwhile increasing.
In the unanaesthesiated animal a series of such contractions would be the result of such stimulation.
These sudden and well-marked contractions occur at intervals of many seconds, and show a decided tendency to rhythmic periodicity, though the rhythm is not always perfectly exact.
The abbreviations and contractions in which both abound were the labor-saving devices of the copyists, adopted without hesitation by the printers who used the MSS.
In the present Bible among the typographical differences found in the copies are three varieties of the colophon, two of which however are identical in language and differ only in the printers' use of contractions and capitals.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "contractions" in a variety of sentences. We hope that you will now be able to make sentences using this word.
