Which of the following statements supports the claim that the stomach carries out its activities as a result of the integrated activity of its tissues?
Choose 1

The stomach contains smooth muscle tissue which is made up of smooth muscle cells, and
epithelial tissue which includes columnar epithelial cells.

During digestion, the stomach's glandular epithelial tissues secrete digestive juices while the
smooth muscle tissue produces contractions to churn the contents.

Parietal cells in the stomach lining secrete hydrochloric acid, and this function helps the
organism digest food.
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