1. | Organs in the body like the gastrointestinal tract, heart, kidney and liver do not produce any hormones. |
2. | Non-nutrient chemicals produced by the body in trace amounts that act as intercellular messengers are known as hormones. |
3. | Releasing and inhibitory hormones are produced by the pituitary gland. |
4. | Adenohypophysis is under direct neural regulation of the hypothalamus. |