(n.) A muscle which serves to extend or straighten any part of the body, as an arm or a finger; -- opposed to flexor.
Example Sentences:
(1) When subjects centered themselves actively, or additionally, contracted trunk flexor or extensor muscles to predetermined levels of activity, no increase in trunk positioning accuracy was found.
(2) The repriming of K-contractures was more affected by changes in [Ca]0 in normal soleus than in normal extensor digitorum longus and this difference was unaffected by dystrophy.
(3) Neuromuscular transmission and muscle sensitivity to acetylcholine (ACh) were studied in vitro in soleus and extensor digitorium longus (EDL) from 6 hr to 4 months after the injection of toxin.3.
(4) From the results presented it appears that morphine produces a reciprocal change in the activity evoked in extensor and flexor reflex pathways.
(5) There were no significant effects of training on the time-related contractile properties (time to peak torque, half-relaxation time), CSA, or %MUA of the elbow flexors or knee extensors.
(6) The cortical thresholds for contraction of m. extensor digitorum communis and for acceleration of the discharges of its muscle spindles have therefore been compared.2.
(7) The aim was to find out to what extent information from homonymous muscles of the forelimbs converge on the same CBM neurons and whether the probability of such a convergence depends on location (axial, proximal, distal) or function (flexor, extensor) of the tested muscles.
(8) The movement resulting from activity of the long extensor is complex and there are three or more qualitatively different patterns of extension.
(9) Electromyographic reaction times of the left and the right finger extensor muscles in extension movement of the wrist were examined in 42 patients with Parkinson's disease, and 20 normal subjects.
(10) In both preparation types, phrenic discharges are highly correlated to the extensor activities.
(11) Previously unidentified forms of suxamethonium-induced contractures have been investigated in chronically denervated rat extensor digitorum longus (EDL) muscle at 20 degrees C. Contractures were assigned to groups 1-6 on the basis of the peak tension (Tp1) during 0-10 min exposure to the drug (3.0 x 10(-5) M), (7.0 x 10(-6) M), and (3.5 x 10(-6) M) and the subsequent retention, increase, or decrease in tension (Tp2), during the further 10 min.
(12) These changes in flexor and extensor burst duration were reflected in changes in the step cycle duration.
(13) The sciatic nerve was cut as close to, or as far from the extensor digitorum longus muscles as possible.
(14) When maximal isometric trunk flexor or extensor torques were imposed upon a maximal Valsalva manoeuvre, transversus abdominis activity and intra-abdominal pressure remained comparable within and across conditions, whereas obliquus internus, obliquus externus and rectus abdominis activities either markedly increased (flexion) or decreased (extension).
(15) Both the extensor indicis and the abductor pollicis longus are functional synergists and are under voluntary control of the brain.
(16) EMG of several flexor and extensor muscles was recorded together with the kinematics of the movement (EL.I.TE.
(17) A rare case of aseptic tenosynovitis from oxytocin injection in the vicinity of a tendon causing spontaneous rupture of the extensor digitorum communis tendon is reported.
(18) A maximum number of lesions had developed after 24 hr, and lesions were also present in extensor digitorum longus (EDL) at this time.
(19) Cutaneous macroglobulinosis is characterized by multiple flesh-colored papules on extensor skin surfaces.
(20) The cellular mechanisms responsible for the differences in the firing behavior of flexor and extensor motoneurons are currently being investigated using techniques that are only possible using the in vitro preparation.
Triceps
Definition:
(n.) A muscle having three heads; specif., the great extensor of the forearm, arising by three heads and inserted into the olecranon at the elbow.
Example Sentences:
(1) The distributions of triceps and subscapular skinfolds in these 1-year-old infants were considerably lower than in a 1967-68 survey of British 1-year-olds.
(2) Physiotherapy for 4 to 12 weeks produced improvement, but in four cases early operation for excision of fibrous tissue and lengthening of the triceps was necessary to restore adequate flexion.
(3) Positive correlations were observed between mean log fasting insulin concentration and all parameters of obesity except log triceps skinfold thickness in men.
(4) In severely impaired limbs, there was a marked shift in both the peak EMG angle and the angular domain of EMG activity for both biceps and triceps muscle groups, away from the normal elbow flexion-extension axis towards external humeral rotation and shoulder girdle elevation.
(5) Torque pulses (of 10 or 100 msec) injected randomly to load or unload the movements stretched or slackened the appropiate prime movers: biceps or triceps.
(6) Stretch reflexes of posterior tibial (PT) and triceps surae (TS) muscles were studied electrophysiologically in 27 children with unoperated unilateral congenital equinovarus deformity, in an attempt to evaluate changes in tone of the leg muscles as a possible pathogenetic factor.
(7) Triceps skinfolds were smaller than those of British children and changed little in boys over the measured age range.
(8) During the MONICA project, the survey of cardiovascular risk factor prevalence enabled us to measure the thickness of four skinfolds (biceps, triceps, subscapular, suprailiac) in 263 inhabitants of Lausanne (125 men, 138 women).
(9) The tendons of insertion of the latissimus dorsi and the teres major muscles and the tendon of origin of the long head of the triceps brachii muscle were united, forming a conjoint tendon that attached to the infraglenoid tubercle of the scapula and the lower part of the anatomical neck of the humerus adhering to the articular capsule of the shoulder joint.
(10) The bivariate correlations, by sex, of percentage of body fat with five obesity indices are highest with the triceps skinfold and least with weight-height.
(11) For the girls, significant differences (p less than .01) also existed in triceps measurements among the 10-year-olds and subscapular measurements at all age levels.
(12) Biopsies of the biceps femoris and triceps muscles, when examined with the electron microscope, revealed evidence of sarcotubular and mitochondrial abnormalities.
(13) The low values for triceps skinfold thickness are probably due to differences in the distribution of subcutaneous fat at different sites in the body as found between caucasian and non-caucasian population groups.
(14) At least eight centimeters of the posterior aspect of the proximal region of the humeral diaphyseal cortex can be exposed through the interval between the lateral head of the triceps and the deltoid muscle.
(15) Sixteen monkeys underwent chronic conditioning of the triceps surae H-reflex.
(16) Torque generated about the ankle joints during maximum isometric contraction of the plantar flexor muscles was measured on a subject 4 months after unilateral excision of the entire triceps surae.
(17) Dense adhesions were found fixing the rami musculares to the surfaces of the triceps muscle.
(18) The aim of this study was to investigate the reflex effects on triceps surae and plantaris fusimotor neurones elicited by tonic stretch of the contralateral posterior biceps and semitendinosus (p.b.s.t.)
(19) Operative findings showed that the medial head of triceps brachii shifted medially and covered the ulnar nerve.
(20) Pyridostigmine significantly decreased the contracture of innervated triceps surae muscle in a frequency dependent manner.