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观察8只家兔心脏房室结区神经终末的亚微结构.该区内有丰富的神经末梢;游离神经末梢,末梢神经束及突触小球(轴-轴突触多联体).神经末梢膨突与结细胞相贴近形成神经结细胞接点.结细胞膜外有一层基膜,末梢膨突内小泡与轴膜融合、破裂外排.轴膜不完整,轴膜外有一层深色颗粒带;可能是由小泡外排的递质所成.对心壁内感觉神经及突触小球可能参予构成心脏自律系统外周神经调节环路略加讨论.
To observe the submicroscopic structure of the terminal nerve terminals in the atrioventricular node of 8 rabbits, which are rich in nerve endings, free nerve endings, peripheral nerve bundles and synaptic spheroids (axon-synaptic cascade) Distal bulge and junction cells close to form neuron junction cells junction cell membrane with a basement membrane, peripheral bulging vesicles and axial membrane fusion, rupture efflux axial membrane incomplete, axial layer of dark particles May be formed by the efflux of the vesicle efflux into the heart wall of the sensory nerve and synaptic spheroids may participate in the formation of cardiac autonomic nervous system regulatory loop a little discussion.