originates in the thoracic regions of the spinal cord; opposes physiological effects of the parasympathetic: reduces digestive secretions; speeds the heart; contracts blood vessels
双语例句
1
The sympathetic and para-sympatheticnervoussystems are brought into a state of balance.
交感神经和准交感神经系统正进入一个平衡的状态带来的。
2
The autonomic nervous system has two parts: the sympathetic and the parasympathetic nervoussystems.
自主神经系统又分为两部分：交感神经系统和副交感神经系统。
3
Heart rate variability has been used to assess activation of the sympathetic and the parasympathetic nervoussystems.