Answer the following question given this paragraph: 

Gastric Secretion The secretion of gastric juice is controlled by both nerves and hormones. Stimuli in the brain, stomach, and small intestine activate or inhibit gastric juice production. This is why the three phases of gastric secretion are called the cephalic, gastric, and intestinal phases (Figure 23.17). However, once gastric secretion begins, all three phases can occur simultaneously.


Q: Stimuli in the brain, stomach, and small intestine activate or inhibit production of what secretion?

 Choices:

- metabolic juice

- sweat

- digestive juice

- gastric juice

A:
gastric juice
