Sellers A F, Lowe J E, Brondum J
Am J Physiol. 1979 Nov;237(5):E457-64. doi: 10.1152/ajpendo.1979.237.5.E457.
The equine large colon is the major cellulose-fermentation locus of these species. The area of juncture of the ventral and dorsal divisions of the equine large colon was characterized, in 13 chronic unanesthetized animals and in 25 in vitro preparations, as an area of resistance to aboral flow. This is a probable pacemaker area. The reservoir function of this part of the colon is apparently facilitated by the presence of a pacemaker at this level. There was a general rise in recorded intraluminal pressure peaks during the first hour of feeding. This characteristic was not altered after resection of the extrinsic nerve supply. Electrical stimulation of the extrinsic nerve net in conscious animals at times mimicked the groups of intraluminal pressure peaks seen at the beginning of feeding.
马的大结肠是这些物种主要的纤维素发酵部位。在13只慢性未麻醉动物和25个体外制剂中，马大结肠腹侧和背侧分支的交界处被确定为对向口外流动具有阻力的区域。这可能是一个起搏点区域。结肠这一部分的储存功能显然因该水平存在起搏点而得到促进。进食的第一个小时内，记录到的腔内压力峰值普遍升高。切除外在神经供应后，这一特征并未改变。在清醒动物中，对外在神经网进行电刺激有时会模拟进食开始时出现的腔内压力峰值群。
