| 释义 |
交感神经jiāogǎn-shénjīng从胸部和腰部的脊髓发出的神经,在脊柱两侧形成串状的交感神经节,再由交感神经节发出神经纤维分布到内脏、腺体和血管的壁上。作用跟副交感神经相反,有加强和加速心脏收缩,使瞳孔扩大,使肠蠕动减弱等作用。{sympathetic nerve; sympathetic system; nerves extending from the thoracic and lumbar regions of the spinal cord, and forming clusters of ganglia on each side of the spine. Nerve fibres from the ganglia extend to the inner organs, the glands and the vascular system. They function in opposition to the parasympathetic system to strengthen and accelerate systaltic action of the heart, dilate the pupil of the eye and diminish intestinal peristalsis, amongst others.} |