tonus


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Related to tonus: clonus, muscle tonus

tonus

 [to´nus]
tone or tonicity; the slight, continuous contraction of a muscle, which in skeletal muscles aids in the maintenance of posture and in the return of blood to the heart.

to·nic·i·ty

(tō-nis'i-tē),
1. A state of normal tension of the tissues by virtue of which the parts are kept in shape, alert, and ready to function in response to a suitable stimulus. In the case of muscle, it refers to a state of continuous activity or tension beyond that related to the physical properties; that is, it is active resistance to stretch; in skeletal muscle it is dependent upon the efferent innervation.
See also: isotonicity. Synonym(s): tonus
2. The osmotic pressure or tension of a solution, usually relative to that of blood.
See also: isotonicity.
[G. tonos, tone]

tonus

/to·nus/ (to´nus) tone or tonicity; the slight, continuous contraction of a muscle, which in skeletal muscles aids in the maintenance of posture and in the return of blood to the heart.

tonus

(tō′nəs)
n. pl. to·nuses
Body or muscular tone; tonicity.

tonus

[tō′nəs]
Etymology: Gk, tonos, stretching
1 also called muscle tone. The normal state of balanced tension in the body tissues, especially the muscles. Partial contraction or alternate contraction and relaxation of neighboring fibers of a group of muscles hold the organ or the part of the body in a neutral functional position without fatigue. Tonus is essential for many normal body functions, such as holding the spine erect, the eyes open, and the jaw closed.
2 also called tone, the state of the body tissues being strong and fit.

to·nic·i·ty

(tō-nis'i-tē)
1. A state of normal tension of the tissues by virtue of which the parts are kept in shape, alert, and ready to function in response to a suitable stimulus. In the case of muscle, it refers to a state of continuous activity or tension beyond that related to the physical properties, i.e., its active resistance to stretch; in skeletal muscle, it is dependent on the efferent innervation.
Synonym(s): tonus.
2. The osmotic pressure or tension of a solution, usually relative to that of blood.
See also: isotonicity
[G. tonos, tone]

tonus

the state of moderate contraction of muscle as a result of continuous low-level stimulation which maintains the posture of an animal.Tonus occurs because some cells in every muscle are in TETANUS (1) and the muscle feels firm. The condition continues without fatigue because some cells are relaxed whilst others are contracted.

tonus (tōˑ·ns),

n the continuous partial contraction of muscles to maintain posture and to help stabilize joints.

tonus 

A state of partial contraction present in a muscle in its passive state as, for example, when the eye is in the physiological position of rest. Syn. muscle tone. See resting state of accommodation; physiological position of rest; tonic vergence.

tonus

tone or tonicity; the slight, continuous contraction of a muscle, which in skeletal muscles aids in the maintenance of posture and in the return of blood to the heart.
References in periodicals archive ?
Hastanin kas gucu muayenesinde sol alt ve sol ust ekstremitesinde daha belirgin dort ekstremitede tonus artisi dikkat cekiciydi.
The mechanism involves sudden loss of vasomotor tonus and as a result, systemic hypotension, bradycardia, and asystole.
According to the literature, there may be a relationship between alterations in the lingual frenulum and lingual tonus [22].
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owner of Tonus Construction, former MP from Prosperous Armenia Party Ashot Tonoyan says that he cannot help them as he is
During W states, ECoG showed desynchronized activity and high EMG tonus.
Observou-se neste estudo alteracoes fonoaudiologicas com repercussoes no tonus e mobilidade dos orgaos fonoarticulatorios, dificuldade na funcao da degluticao e alteracoes vocais.
Os dados coletados como tamanho e consistencia dos foliculos; ovulacao; avaliacao morfologica dos corpos luteos; eventuais foliculos; presenca de liquidos, tumores, cistos, edema uterinos; tonus uterino e cervical, bem como da abertura ou fechamento cervical e diagnostico de prenhez, foram cuidadosamente anotados de acordo com Mckinnon, (1999) e Caiado et al.
Athletes performed standard training, specific to the week before the competition, training which did not require the organism to adapt to new stimuli and which focused on the regular active rest routine, maintaining an optimum level of the general tonus and on the psychological and tactic preparation of the competition.
8,9 Periodontal treatment needs have developmental milestones as well as physical limitabeen found to be highly correlated to OH of individuals tions that might include abnormal muscles tonus, with handicapping conditions.
Gun icinde dayanilmaz uyku ataklari ve ani tonus kaybiyla karakterizedir.