Abstract
To investigate the location of the spinal cord fibers related to the induction of oxytocin release by suckling, the effect of diverse spinal lesions on milk removal was studied in lactating rabbits. Spinal cord hemisection resulted in blockage of milk ejection when the litter was restricted to suckling the nipples of the same side as the lesion. In contrast, suckling ofthe contralateral nipples readily elicited milk ejection. Destruction of the dorsal funiculi did not inhibit milk removal. Large bilateral lesions of the ventrolateral funiculi blocked milk ejection. These results suggest that the spinal pathway for milk ejection in the rabbit is ipsilateral and uncrossed, and it courses in the ventrolateral funiculi. (Endocrinology 83: 615,1968)
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