Leutert G
Z Gesamte Inn Med. 1986 Mar 1;41(5):131-3.
The age dependency of functional systems is treated at the vocal cord and the cricothyroid articulation. At the time of birth there is a different developmental stage of the vocal cord. The anterior parts are essentially further differentiated than the posterior ones. The cause is to be found in the insertion of the vocal muscle at the anterior part. By intrauterine muscle contraction the polypeptide chains of the collagenous fibres are directed. The oblique cricothyroid ligament which limits the tension of the vocal cord in the cricothyroid articulation is already well developed and protects the vocal ligament from overstretching. The differences in the development balance in the first decennium. At the same time a sex-different structure of the vocal cord develops, whereby the vocal cord of the woman above all consists of elastic, the vocal cord of the man of collagenous fibres. At old age the two kinds of fibres degenerate. The cricothyroid ligament, however, does not show any involutional processes and as in early childhood fulfils its protective function.
功能系统的年龄依赖性在声带和环甲关节处得到体现。出生时，声带处于不同的发育阶段。前部比后部的分化程度更高。原因在于声带肌在前部的附着。通过子宫内的肌肉收缩，胶原纤维的多肽链得以定向排列。在环甲关节处限制声带张力的斜角环甲韧带已发育良好，可保护声带韧带不被过度拉伸。在第一个十年中，发育平衡存在差异。与此同时，声带出现了性别差异结构，女性的声带主要由弹性纤维组成，男性的声带则主要由胶原纤维组成。在老年时，这两种纤维都会退化。然而，环甲韧带并未显示出任何退化过程，并且如同在儿童早期一样履行其保护功能。
