呕吐排出期食管周围膈肌松弛的中枢运动程序。

Central motor program for relaxation of periesophageal diaphragm during the expulsive phase of vomiting.

作者信息

Miller A D, Lakos S F, Tan L K

机构信息

Rockefeller University, New York, NY 10021.

出版信息

Brain Res. 1988 Jul 26;456(2):367-70. doi: 10.1016/0006-8993(88)90241-7.

DOI:10.1016/0006-8993(88)90241-7

PMID:3208085

Abstract

Relaxation of the periesophageal diaphragm during expulsion in decerebrate cats was found to arise from central mechanisms rather than a reflex of peripheral origin. Reductions in periesophageal EMG activity during expulsion were similar before and after cervical vagotomy, which abolishes reflex relaxation of the periesophageal diaphragm following esophageal distension. Reduced activity was also observed in a phrenic nerve branch to the periesophageal region during 'fictive vomiting' in a paralyzed animal.

摘要

在去大脑猫的排出过程中，食管周围膈肌的松弛被发现源于中枢机制而非外周起源的反射。颈迷走神经切断术前后，排出过程中食管周围肌电图活动的降低相似，该手术消除了食管扩张后食管周围膈肌的反射性松弛。在瘫痪动物的“假呕吐”过程中，也观察到膈神经至食管周围区域的分支活动降低。