Define the endocrine system

Explanation

**Step-by-Step Solution:**

1. **Definition of the Endocrine System**: The endocrine system is a network of glands that produce and release hormones directly into the bloodstream.

2. **Components of the Endocrine System**: This system consists of various endocrine glands, such as the pituitary gland, thyroid gland, adrenal glands, and pancreas, among others.

3. **Function of Hormones**: The hormones produced by these glands act as chemical messengers that regulate different bodily functions, including growth, metabolism, and mood.

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