REGULATION OF SARCOMERE NUMBER IN SKELETAL-MUSCLE - A COMPARISON OF HYPOTHESES
REGULATION OF SARCOMERE NUMBER IN SKELETAL-MUSCLE - A COMPARISON OF HYPOTHESES
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DOI：
10.1002/mus.880070213
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发表时间：
1984-01-01
期刊：
影响因子：
3.4
通讯作者：
GRIMM, BR
中科院分区：
文献类型：
--
作者：
HERRING, SW;GRIMM, AF;GRIMM, BR
测量了猪咀嚼肌16个部位的肌节长度，这些猪固定在最大偏位(张开的颌骨)和姿势(接近咬合的位置)。这些数据，加上关于兔下颌肌肌节长度的数据，被用来评估关于调节横纹肌中连续肌节数量的因素的相互矛盾的假设。当肌肉处于高度紧张状态时，调整肌节数量以达到最佳肌节长度。大多数情况下，这发生在下巴位置，肌肉处于电活动状态。
Sarcomere lengths from 16 locations in the muscles of mastication were measured from pigs fixed in maximum excursion (wide jaw opening) and in postural position (near occlusion). These data, plus data on sarcomere lengths in rabbit jaw muscles, were used to evaluate conflicting hypotheses about the factors which regulate serial sarcomere number in striated muscles. Sarcomere number is adjusted to achieve an optimum sarcomere length when the muscle is experiencing a high level of tension. Most often, this occurs at jaw positions where the muscle is electrically active.