Though not the most common occurrence, Automation Engineers sometimes become Automation Engineering Managers, where the average income is $105K per year.
For example, the antrum of the stomach (gastric antrum) is a portion before the outlet, which is lined by mucosa and does not produce acid. The paranasal sinuses can be referred to as the frontal antrum, ethmoid antrum, and maxillary antrum.
The gastric pits of the stomach open on to branching glands: pyloric glands in the antral part of the stomach; gastric or oxyntic (acid forming) glands in the fundus and body of the stomach. A schematic diagram of an oxcyntic gland is shown here (see also anatomy).