The ventricular action potential has a long refractory period so that the mechanical response of the ventricle will be discrete; one coordinated mechanical response per electrâ¦ical activation sequence. Otherwise, with additional electrical stimuli, the mechanical responses would summate producing a prolonged contraction.
Microfracture Technique. Overview. Microfracture is a surgical technique that has been developed to treat chondral defects, which are damaged areas of articular cartilage of the knee. It is a common procedure used to treat patients with full thickness damage to the articular cartilage that goes all the way down to the bone.
Definition of tincture. 1  1 : a solution of a medicinal substance in an alcoholic solvent. 2  2a : a characteristic quality : castb : a slight admixture : trace a tincture of doubt. 3  3a : color, tintb archaic : a substance that colors, dyes, or stains. 4  4 : a heraldic metal, color, or fur. 5  5 obsolete : an active principle or extract.