The stomach has four major regions: the cardia, fundus, body, and pylorus. The addition of
an inner oblique smooth muscle layer gives the muscularis the ability to vigorously churn and mix food.
<a rel="nofollow" class="external free" href="https://openstax.org">https://openstax.org</a>
CC BY 4.0
Adapted from <a rel="nofollow" class="external free" href="https://openstax.org/details/books/anatomy-and-physiology">https://openstax.org/details/books/anatomy-and-physiology</a>