Answer the following question given this paragraph: 

The pea-sized pituitary gland is just below the hypothalamus and attached directly to it. The pituitary receives hormones from the hypothalamus. It also secretes its own hormones. Most pituitary hormones control other endocrine glands. That’s why the pituitary gland is called the “master gland” of the endocrine system. Table below lists several pituitary hormones and what they do.


Q: The pituitary gland is called the “master gland” of what system?

 Choices:

- hormonal

- digestive

- nervous

- endocrine

A:
endocrine
