Medullary expiratory activity: influence of intercostal tendon organs and muscle spindle endings.
Medullary expiratory activity: influence of intercostal tendon organs and muscle spindle endings.
复制标题
髓质呼气活动：肋间腱器官和肌梭末梢的影响。
DOI：
10.1152/jappl.1987.62.3.1057
复制
发表时间：
1987
期刊：
影响因子：
--
通讯作者：
Lindsey,BG
中科院分区：
文献类型：
--
作者：
Shannon,R;Bolser,DC;Lindsey,BG
研究了去大脑猫肋间肌梭末梢（MSE）和腱器（TO）对延髓呼气活动的影响。通过电刺激T6腹根的外周切割端引起的肋间肌收缩受阻，用于刺激肋间TO而不刺激MSE。肋间肌收缩受阻增强了呼气喉运动神经元的活动，并且对球脊髓呼气神经元的活动没有影响或减少。振动用于刺激肋间MSE。肋间MSE对延髓呼气神经元活动没有影响。它的结论是，外部和内部肋间TO呼气喉运动神经元活动的兴奋作用和抑制效应的驱动肋间和/或腹部肌肉的呼气神经元的亚群，肋间MSE没有直接影响延髓呼气活动。
Studies were conducted to determine the effects of intercostal muscle spindle endings (MSEs) and tendon organs (TOs) on medullary expiratory activity in decerebrate cats. Impeded intercostal muscle contractions, elicited by electrical stimulation of the peripheral cut end of the T6 ventral root, were used to stimulate intercostal TOs without MSEs. Impeded contractions of the intercostal muscles augmented expiratory laryngeal motoneuron activity, and either had no effect on or reduced the activity of bulbospinal expiratory neurons. Vibration was used to stimulate intercostal MSEs. Intercostal MSEs had no effect on medullary expiratory neuron activity. It is concluded that both external and internal intercostal TOs have an excitatory effect on expiratory laryngeal motoneuron activity and an inhibitory effect on a subpopulation of expiratory neurons driving intercostal and/or abdominal muscles, and intercostal MSEs have no direct influence on medullary expiratory activity.