Question: what is the main parts of the endocrine system?
Answer: Hypothalamus. The hypothalamus is located at the base of the brain, near the optic chiasm ﻿﻿﻿where the optic nerves behind each eye cross and meet. ...  Pineal body. ...  Pituitary. ...  Thyroid and parathyroid. ...  Thymus. ...  Adrenal gland. ...  Pancreas. ...  Ovary.