(a.) Of or pertaining to tetanus; having the character of tetanus; as, a tetanic state; tetanic contraction.
(a.) Producing, or tending to produce, tetanus, or tonic contraction of the muscles; as, a tetanic remedy. See Tetanic, n.
(n.) A substance (notably nux vomica, strychnine, and brucine) which, either as a remedy or a poison, acts primarily on the spinal cord, and which, when taken in comparatively large quantity, produces tetanic spasms or convulsions.
Example Sentences:
(1) During the performance of propulsive waves of the oesophagus the implanted vagus nerve caused clonic to tetanic contractions of the sternohyoid muscle, thus proving the oesophagomotor genesis of the reinnervating nerve fibres.
(2) However, tetanic stimulation gave the same results as in untreated preparations when the tonicity was increased.
(3) The extracts of both male serum and female follicular-phase serum, containing no immunoreactive relaxin, resulted in tetanic contractions of the muscle segment.
(4) In zero Ca2(+)-EGTA Ringer solution, the low residual MEPP frequency is independent of terminal length, even when MPP frequency is sharply increased by tetanic stimulation.
(5) There was no statistical significance between the other methods in respect of tetanic force.
(6) AMP aminohydrolase activity is enhanced by 60% after 5 s tetanic stimulation of phosphorylase kinase-deficient mouse muscle and after 60 s tetanus in normal mice.
(7) Tetanic stimulation of the presynaptic neuron produced short-term potentiation of both amplitude and time course of subsequent PSCs.
(8) It was shown that the mechanism of the antinociceptive effect of tetanic stimulation of the hypothalamus is not related to the concomitant increase of the blood pressure.
(9) The change was greater in magnitude than that observed in spine synapses following tetanically induced potentiation.
(10) Three types of method were compared: controlled release from the plateau of tetanic tension (P0); controlled release at various times during the development of tension; and evaluation of the elastic stretching by means of an additional compliance.
(11) Tension responses produced by stimulating each isolated motor axon were used to find the tetanic tension of the muscle unit and to classify the unit (12) as either type S (slow twitch, fatigue resistant), type FR (fast twitch, fatigue resistant), type FI (fast twitch, intermediate fatigability), or type FF (fast twitch, highly fatigable).
(12) Measurements were made on locomotor performance (burst run and swim speed, run and swim endurance), morphology (body, tail, and hindlimb length, body mass), and skeletal muscle mechanics (isometric: twitch and tetanic tension, rates of force development and relaxation; isotonic: maximal velocity of shortening and power output) in a size range of individual salamanders (Ambystoma tigrinum nebulosum) at 10 and 20 degrees C. The size dependence of each factor was determined, and the interindividual correlations among factors were measured after removal of size effects.
(13) The authors give a survey of the literature on the tetanic syndrome and its effects on the dental hard tissues and the tooth supporting structures.
(14) The amplitude and duration of the postsynaptic depolarization during tetanic stimulation in the cells that displayed LTP in the 8-bromo-cAMP-injected group were significantly greater than in the cells that did not display LTP in the adenosine 5'-monophosphate-injected group.
(15) Diaphragm and EDL muscles excised from pyridostigmine-treated rats and tested in vitro showed no significant alterations in twitch and tetanic tensions and displayed the same sensitivity as muscles of control animals to subsequent pyridostigmine exposures.
(16) A singular perturbation analysis of the 8-dimensional phase portrait of the model characterizes the role of calcium during the plateau phase of the ventricular action potential and demonstrates how the calcium refractory period prevents tetanization.
(17) It was concluded that atracurium produces a profound tetanic fade, with respect to its effect on twitch or tetanic tension, suggesting that the drug is a potent neuromuscular blocker, with rapid onset of blockade.
(18) This sevenfold difference in slopes, which represent the O2 cost of a single contraction without fatigue, corresponds to the difference in developed tension between twitch and tetanic contractions.
(19) Aged muscle is thus weaker, slower, and tetanized at lower fusion frequencies but, paradoxically, more resistant to static fatigue.
(20) A linear regression analysis on the behavioral and electrophysiological data showed a negative correlation (Spearman rank correlation coefficient rs = -0.705; P less than 0.001) between percent of conditioned responses in the shuttle box and threshold frequency necessary to induce LTP in gyrus dentatus in response to tetanic stimulation of the perforant path.
Tetany
Definition:
(n.) A morbid condition resembling tetanus, but distinguished from it by being less severe and having intermittent spasms.
Example Sentences:
(1) It is shown from an analysis of the transient force responses observed after sudden changes in muscle length applied both at full and reduced overlap and during the rising phase of short tetani that these responses can be explained on the basis of varying numbers of cross bridges attached at the time of the length step.
(2) The existence of such an effect also in the present preparation was studied by giving 'interrupted' tetani with a total duration of about 2 s. In rested fibres the mean rate of relaxation was found to fall from 140.9 to 71.8% (n = 11) of the control (end of 350 ms stimulation) with a time constant of about 0.5 s. Thus, a marked slowing during a long tetanus occurs also in mammalian muscle.
(3) A physiological deficiency of Mg results in hypomagnesemic tetany.
(4) The investigation involved the older workers and the workers at highest dust exposure levels and included general medical screening with emphasis on the existence of hypertension, edema, calcium tetany, anemia, common skin problems, nasal septum perforation, persistent diarrhea; lung function tests; serum analyses for sulfate, calcium, sodium, and chloride content; and urinary inorganic sulfate output.
(5) This can lead to neonatal tetany or perhaps permanent neonatal hypoparathyroidism.
(6) In grass tetany, the animals generally are grazing cool-season forages in which Mg concentration or bioavailability of plant Mg is low.
(7) Immunoprophylaxis of infectious complications in surgical patients is currently practiced and is efficacious for disease caused by Clostridium tetani, rabies virus, Streptococcus pneumoniae, and hepatitis B virus.
(8) The association between idiopathic mitral valve prolapse (MVP) and latent tetany (LT) is common, as shown in our previous studies on adults and children.
(9) Renal tubular acidosis and tetany were the 1st manifestations of Kearns-Sayre syndrome in a 5-year-old child.
(10) In this case, anaerobic culture of C tetani was unsuccessful, possibly because of the inherent difficulty of anaerobic transfer from an oral locus and the extreme fastidiousness of the organism.
(11) Underlying tendency to tetany is the most common aetiology, going hand in hand with increased histamine sensitivity.
(12) Isometric responses to single and twin pulses, tetani and sinusoidal stimulation were measured.
(13) Steady-state force and [Ca2+]i were measured during tetani, and the force versus [Ca2+]i relation was obtained by varying the extracellular calcium concentration ([Ca2+]o).
(14) Further research is required before these lesions can be identified and new knowledge applied to the development of economical, effective programs that prevent milk fever and hypomagnesemic tetany.
(15) Like tetany, which was present in 12 of the patients, epilepsy was a common symptom, occurring in 13, seven of whom had received anticonvulsants for two to eight years before hypocalcaemia was detected.
(16) The results suggest that alkalosis per se can cause tetany in Bartter's syndrome.
(17) A 2-kilobase (kb) EcoI fragment of Clostridium tetani DNA was identified by Southern blotting and was cloned into the Escherichia coli plasmid vector pAT153 with the 32P-labeled oligonucleotide mixture as a probe.
(18) Thirty-eight animals were continued on treatment for a 2nd yr. Sometribove did not affect the incidence of ketosis, milk fever, tetany, or pneumonia.
(19) Although the culture filtrate was highly active, disc electrophoresis revealed that the toxin is a minor component of the mixture of proteins in the crude preparation, and that the minor representation contrasts with the relative prominence of exotoxins in cultures of other bacteria, such as Vibrio cholerae, Corynebacterium diphtheriae, and Clostridium tetani.
(20) Thus, a fetal death or an episode of neonatal tetany may reveal a maternal hyperparathyroidism.