SENSORY AND MOTOR INNERVATION OF MUSCLES

I.活着的哺乳动物初级末端的结构 肌梭的研究将使用荧光染料以及 诺玛克西图像。航站楼的尺寸变化将是 在不同的心轴长度下进行检查。一个3维的 重建将允许量化的 结尾的几何图形的描述。主轴的模型 从这些数据派生出来的数据将有助于理解 这种重要的机械感受器的功能。中的更改 几何图形显示了可能的转导模式。 运动神经轴突传导速度与肌肉的关系 纤维神经支配。脱氧葡萄糖将用于标记肌肉 猫腰浅肌2头之一的纤维 通过刺激单个运动神经轴突而激活。各节将是 用于放射自显影和组织化学。这些数字 活化纤维的横截面积将与 运动神经轴突的传导速度决定哪些因素 导致运动单位力和运动单位力之间的精确关系 耐疲劳单元的传导速度。

I. The structure of the primary ending of the living mammalian muscle spindle would be studied using fluorescent dyes as well as Nomarksi images. Dimensional changes of the terminals will be examined at different spindle lengths. A 3-dimensional reconstruction would be made permitting a quantitative description of the geometry of the ending. A model of the spindle derived from these data will be useful in understanding the function of this important mechanoreceptor. Changes in geometry with suggest possible modes of transduction. II. Relation between motor axon conduction velocity and muscle fiber innervation. Deoxyglucose will be used to label muscle fibers in one of the 2 heads of superficial lumbrical muscle of cat activated by stimulation of a single motor axon. Sections will be used for autoradiography and for histochemistry. The numbers and cross sectional areas of the activated fibers will be related to conduction velocity of the motor axon to determine which factors cause the precise relation between motor unit force and conduction velocity in fatigue resistant units.