(n.) The large muscle which raises the under jaw, and assists in mastication.
Example Sentences:
(1) Electron microscopic observations of the masseter nerve in the aged cats revealed a disruption of the myelin sheaths and a pronounced increase in collagen fibers in the endoneurium and perineurium.
(2) The use of STA as a method for determining SMU tension in the human masseter muscle appears to be highly task-dependent and in the presence of co-activation may be inappropriate.
(3) The duration of the after-hyperpolarization following antidromic spikes in masseter motoneurones ranged from 15 to 50 ms (mean = 30; S.D.
(4) We show here that the embryonic and the fetal MHC and the MLC1emb are expressed throughout perinatal and postnatal masseter development.
(5) Masseter EMG was recorded by fine wire electrodes and amplified by a specially designed amplifier.
(6) The effects of treatment were monitored by measurement of the bite-force (group with spring bite-blocks only), by electromyographic recording of the activity of the temporal and masseter muscles, and by X-ray cephalometry.
(7) A 5-year-old male Doberman Pinscher had nasal stenosis, dropped mandible, bilateral atrophy of masseter and temporalis muscles, and Horner's syndrome caused by aleukemic myelomonocytic leukemia.
(8) Before and one, two, three, and seven days after the experiment, the following measures were made: (1) superficial masseter and anterior temporalis muscle tenderness (pain threshold), (2) jaw movement (opening and lateral excursion), and (3) current pain level for the right and left sides of the jaw.
(9) The masseter muscle fine structure is shown to be adapted good to the disturbed functional conditions.
(10) Most of the masseter consists of slow- and fast-twitch oxidative fibres.
(11) By spike-triggered averaging of intracellular synaptic noise it has been shown in pentobarbitone anaesthetized cats that jaw elevator muscle spindle afferents with their cell bodies in the mid-brain have a relatively weak monosynaptic projection to masseter and temporalis motoneurones.
(12) LPS induced fevers similar in heights and courses in both nonpregnant and full-term pregnant rabbits It caused decreases in the blood flows to brain, tongue, mammary gland, small intestine, and ear and increases in the blood flows to masseter muscle, bone, liver (hepatic artery), and left ventricle; blood flows to the kidneys, spleen, right ventricle, ovaries, and myometrium did not change.
(13) Exteroceptive suppression of the masseter, temporalis and trapezius muscles, produced by mental nerve stimulation, was studied in 46 patients with chronic headaches.
(14) Evidence is presented that in addition to adult fast and slow myosin, the rabbit masseter contains neonatal and 'cardiac' alpha-MHC.
(15) One of the characteristics of human masseter muscle is type IM fibers, which are rarely seen in muscles other than the masticatory muscles.
(16) The masseter muscle was always a more efficient producer of vertically oriented bite force than the medial pterygoid.
(17) Five injections of lidocaine-HCl into developing mice caused long-term degeneration of the masseter muscle.
(18) Reflex responses occurred in masseter, orbicularis oris inferior, and genioglossus muscles upon direct stimulation of the sites associated with each of these muscles.
(19) Twenty chronic back pain patients, 20 patients who suffered from temporomandibular pain and dysfunction, and 20 healthy controls were instructed to produce eight different levels of muscle contraction in either the m. masseter or the m. erector spinae.
(20) It was found that the masseter muscle in patients with ZMC fractures developed significantly less force than masseter muscle in controls.
Muscle
Definition:
(n.) An organ which, by its contraction, produces motion.
(n.) The contractile tissue of which muscles are largely made up.
(n.) Muscular strength or development; as, to show one's muscle by lifting a heavy weight.
(n.) See Mussel.
Example Sentences:
(1) The extents of phospholipid hydrolysis were relatively low in brain homogenates, synaptic plasma membranes and heart ventricular muscle.
(2) It was found that the skeletal muscle enzyme of the chick embryo is independent of the presence of creatine and consequently is another constitutive enzyme like the creatine kinase of the early embryonic chick heart.
(3) These immunocytochemical studies clearly demonstrated that cells encountered within the fibrous intimal thickening in the vein graft were inevitably smooth muscle cell in origin.
(4) We have amended and added to Fabian's tables giving a functional assessment of individual masticatory muscles.
(5) 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.
(6) Muscle weakness and atrophy were most marked in the distal parts of the legs, especially in the gastrocnemius and soleus muscles, and then spread to the thighs and gluteal muscles.
(7) No monosynaptic connexions were found between anterodorsal and posteroventral muscles except between the muscles innervated by the peroneal and the tibial nerve.
(8) Thus adrenaline, via pre- and post-junctional adrenoceptors, may contribute to enhanced vascular smooth muscle contraction, which most likely is sensitized by the elevated intracellular calcium concentration.
(9) In addition to their involvement in thrombosis, activated platelets release growth factors, most notably a platelet-derived growth factor (PDGF) which may be the principal mediator of smooth muscle cell migration from the media into the intima and of smooth muscle cell proliferation in the intima as well as of vasoconstriction.
(10) Further, the maximal increase in force of contraction was measured using papillary muscle strips from some of these patients.
(11) Peripheral eosinocytes increased by 10%, and tests for HBsAg, antiHBs, antimitochondrial antibody and anti-smooth muscle antibody were all negative.
(12) 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.
(13) A definite relationship between intelligence level and the type of muscle disease was found.
(14) After vascular injury, smooth muscle cells proliferate, reaching a maximum rate at day 2.
(15) In the absence of an authentic target for the MASH proteins, we examined their DNA binding and transcriptional regulatory activity by using a binding site (the E box) from the muscle creatine kinase (MCK) gene, a target of MyoD.
(16) Only the approximately 2.7 kb mRNA species was visualized in Northern blots of total cellular and poly(A+) RNA isolated from cardiac ventricular muscle.
(17) The variation of the activity of the peptidase with pH in the presence of various inhibitors was investigated in both control and insulted muscle fibres.
(18) Recent studies have shown that an aberration in platelet-derived growth factor gene expression is unlikely to be a factor in proliferation of smooth-muscle cells.
(19) This sling was constructed bu freeing the insertion of the pubococcygeus and the ileococcygeus muscles from the coccyx.
(20) Their effects on various lipid fractions, viz., triglycerides (TG), phospholipids, free cholesterol, and esterified cholesterol, were studied in liver, plasma, gonads, and muscle.