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CancerWEB ¿µ¿µ ÀÇÇлçÀü ¸ÂÃã °Ë»ö °á°ú : 6 ÆäÀÌÁö: 1
relaxation
A state of relative freedom from both anxiety and skeletal muscle tension.
(16 Dec 1997)
relaxation factor
Substance presumably involved in the return of muscle fibrils to the resting state after nervous stimulation ceases, postulated to act by withdrawing Calcium from myosin-ATPase sites.
(05 Mar 2000)
relaxation response
An integrated hypothalamic reaction resulting in decreased sympathetic nervous system activity which, physiologically and psychologically, is almost a mirror image of the body's response's to Cannon's emergency theory (flight or fight response); can be self-induced through the use of techniques associated with transcendental meditation, yoga, and biofeedback.
See: emergency theory.
(05 Mar 2000)
relaxation suture
A suture so arranged that it may be loosened if the tension of the wound becomes excessive.
(05 Mar 2000)
relaxation techniques
The use of muscular relaxation techniques in treatment.
(12 Dec 1998)
relaxation time
Time taken for a system to return to the resting or ground state or a new equilibrium state following perturbation. Often used in context of receptor systems that have a refractory period after responding and then relax to a competent state. Can be used more precisely to mean the time for a system to change from its original equilibrium value to 1/e of this original value.
(18 Nov 1997)
CancerWEB ¿µ¿µ ÀÇÇлçÀü À¯»ç °Ë»ö °á°ú : 12 ÆäÀÌÁö: 1
cardioesophageal relaxation
Relaxation of the lower oesophageal sphincter which can allow reflux of acidic gastric contents into the lower oesophagus, producing oesophagitis.
(05 Mar 2000)
muscle relaxation
That phase of a muscle twitch during which a muscle returns to a resting position.
(12 Dec 1998)
progressive muscle relaxation
A cognitive-behavioural strategy in which muscles are alternately tensed and then relaxed in a systematic fashion.
(16 Dec 1997)
spin-lattice relaxation
In nuclear magnetic resonance, the return of the magnetic dipoles of the hydrogen nuclei (magnetization vector) to equilibrium parallel to the magnetic field, after they have been flipped 90
spin-spin relaxation
In nuclear magnetic resonance, the return of the magnetic dipoles of the hydrogen nuclei (magnetization vector) to equilibrium parallel to the magnetic field, after they have been flipped 90
isometric relaxation
Decrease in tension of a muscle while the length remains constant due to fixation of the ends.
(05 Mar 2000)
isometric relaxation period
Early ventricular diastole beginning with closure of the aortic and pulmonic valves and preceding opening of the atrioventricular valves.
(05 Mar 2000)
isovolumetric relaxation
That part of the cardiac cycle between the time of aortic valve closure and mitral opening, during which the ventricular muscle decreases its tension without lengthening so that ventricular volume remains unaltered; the heart is never precisely isovolumetric (vs. Isovolumic) except during long diastoles with a midiastolic period of diastasis.
Synonym: isovolumetric relaxation.
(05 Mar 2000)
isovolumic relaxation
That part of the cardiac cycle between the time of aortic valve closure and mitral opening, during which the ventricular muscle decreases its tension without lengthening so that ventricular volume remains unaltered; the heart is never precisely isovolumetric (vs. Isovolumic) except during long diastoles with a midiastolic period of diastasis.
Synonym: isovolumetric relaxation.
(05 Mar 2000)
endothelium derived relaxation factor
<biochemistry> This compound is produced from L arginine by the enzyme nitric oxide synthase. Acts as a potent vasorelaxant via elevation of intracellular cGMP in vascular smooth muscle.
Synthesis of nitric oxide is not confined to endothelium, isoforms of nitric oxide synthase are also found in brain, neutrophils and platelets.
Synonym: endothelium derived relaxation factor.
Acronym: NO
(29 Dec 1997)
transverse relaxation
In nuclear magnetic resonance, the rapid decay of the nuclear magnetization vector at right angles to the magnetic field after the 90
longitudinal relaxation
In nuclear magnetic resonance, the return of the magnetic dipoles of the hydrogen nuclei (magnetization vector) to equilibrium parallel to the magnetic field, after they have been flipped 90
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