The stomach's wider funnel-shaped region connecting to the duodenum has two parts. What is the narrower end, immediately before the pyloric sphincter, called?

1. The stomach has four main regions: the cardia, fundus, body, and pylorus. 2. The funnel-shaped pylorus itself has a wider end, the pyloric antrum, which connects to the body of the stomach. 3. Its narrower end, called the pyloric canal, connects to the duodenum, with the pyloric sphincter located at this point of connection. 4. The pyloric antrum is the wider end (not the narrower one), while the fundus and cardia are separate, more superior regions of the stomach entirely. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 23 "The Digestive System", section 23.4, p. 1108_