What is the structure of the frog's stomach?

The frog's stomach is a J-shaped organ that consists of two main regions: the anterior glandular part and the posterior muscular part. The glandular portion secretes digestive enzymes and acids, while the muscular region helps to mechanically break down food. The stomach also has a valve-like structure called the pylorus that regulates the passage of digested food into the intestine. This structure allows frogs to efficiently process their diet, which primarily consists of insects and other small prey.