Abstract
The rôle of both peripheral and central mechanism in the control of primary peristalsis was studied in pigeon cervical oesophagus. The results from the transection of oesophageal muscular wall and of extrinsic nerves suggest that: primary peristalsis is programmed centrally. extrinsic motor input is carried in glossopharyngeal nerves and distributed separately at each oesophageal level through intramural neurons. intramural neurons do not seem capable of propagating the peristaltic sequence irrespective of the central control.
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