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].
Segundo estes autores e TILLEY (1992), este fato deve-se a alta atividade do componente autonomo simpatico em gatos, quando comparado aos caes com predominio do tonus parassimpatico.
cheque] Tonus 1- Minimo tonus verificado do anestro ate o inicio da atividade ciclica.
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.
Em trabalho realizado por Duarte e Vieira (30) tambem foi demonstrada correlacao entre tensao uterina e taxa de gestacao, onde eguas com tonus uterino moderado a intenso apresentaram taxas de prenhez de 79,3%, ja os animais com tonus uterino ausente ou fraco os indices de prenhez foram 36,8%.
O Psicodiagnostico Miocinetico foi desenvolvido por Mira y Lopes com o objetivo de investigar os aspectos estruturais e reacionais da personalidade relacionados as dimensoes Tonus Vital, Agressividade, Dimensao Tensional, Reacao Vivencial, Emotividade e Predominio Tensional por meio de respostas psicomotoras (Galland de Mira, 2002).
SP klinik siniflandirmasi tonus anormalligine gore spastik, diskinetik (atetoid, koreiform, ballistik, ataksik), mikst, hipotonik olarak, vucut tutulumuna gore ise hemiplejik, diplejik, triplejik ve total seklinde yapildi.
Regulation in venous capillary tonus by fluctuations in the kinin-kallikrein system is suggested (6).
Its effect is not limited to relaxing tight muscles or increasing hydration in the fascia but it can also be used to increase tonus in the core muscles and contractile strength within the fascia and to initiate a lowering of sympathetic tone in the autonomic nervous system.