INSUFFICIENCY

n. I2n-su2f-fi2sh'e2n-si2. 'L , insufficient (from in, neg., and sufficient i a, a sufficiency). Fr., in suffisance. Ger., Insufficienz, Unzulanglichkeit. The state of being insufficient for its purpose. Absolute i. I. due to thickening, induration, or other change in the cardiac valves themselves, [a, 40.] Active i. of a muscle. A muscular contraction only equal to that usually observed at the beginning of shortening, when the origins and 'insertions of certain muscles in the neighborhood of joints are brought too near together, the muscles being thus made to contract at a mechanical disadvantage. [Landois (K).] Aortic i. Fr., in suffisance aortique. Ger., Aortenklappeninsufficienz. An imperfect closure of the aortic orifice by the aortic valves. It may be due to the rupture of a valve, or to endocarditis, especially to sclerotic endocarditis. [D, 45.] See also Corrigan's DISEASE. Functional mitral i. Fr., in suffisance mitrale an organ i que (ou fonctionnelle). Ger., anorganlsche Mitral in sufficient. Mitral i. due to deficient muscular contractility in the heart itself. [Heitler (a, 40).] I. of the ocular muscles. Fr., in suffisance des muscles oculaires. Ger., Insufficienz der Augenmuskeln. An absence of dynamical equilibrium of the ocular muscles, due either to an inherent weakne of one set of muscles or to an elastic preponderance of another set of muscles. [F.] Mitral i. Fr., in suffisance mitrale (ou de la valvule mitrale). That pathological condition in which the mitral valve inefficiently closes its orifice with the rhythmic action of the heart. [D.] Muscular i. Fr., in suffisance muscutaire. Ger., Muscularinsufficienz. 1. A condition in which a muscle (especially one of the ocular muscles) is relatively weak compared with its antagonist, so that an effort on the part of this muscle is required in order to maintain equilibrium. [B.] Cf. /. of the ocular muscles. 2. See Active and Pa ive i. of a muscle. Pa ive i. of a muscle. The disabled condition of a muscle in the neighborhood of a joint when so stretched by the action of other muscles that it can not contract perfectly. [Landois (K).] too; U", blue: U3, lull; U4, full; UB, urn; U like u (German). [s. 467]