和放松相关的副交感神经系统纤维只存在于骨髓的颈部及荐骨(骨盆)区域。
Parasympathetic fibers concerned with relaxation emerge only from the neck (cervical) and sacral (pelvic) areas of the spinal cord.
作者认为，胸腺皮质和髓质都接受副交感的胆碱能神经纤维的支配，后者对胸腺细胞和肥大细胞等可能起调节作用。
This study suggests that the cortex and medulla of thymus are innervated by parasympathetic cholinergic nerve fibers, which may regulate the thymocytes and mast cells.
某些副交感神经纤维支配心室的血管。
Some parasympathetic fibers innervate the ventricular blood vessels.
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