What organ system do these parts belong 1 pineal 2 pituitary 3 pancreas 4 ovaries 5 testes 6 thyroid 7 parathyroid 8 hypothalamus 9 adrenal?

Endocrine System

1. Pineal gland

2. Pituitary gland

3. Pancreas

4. Ovaries

5. Testes

6. Thyroid gland

7. Parathyroid glands

8. Hypothalamus

9. Adrenal glands