Which of the following statement is correct in relation to the endocrine system?

1.	Adenohypophysis is under direct neural regulation of the hypothalamus
2.	Organs in the body like a gastro-intestinal tract, heart, kidney, and liver do not produce any hormones
3.	Non-nutrient chemicals produced by the body in trace amount that act as an inter-cellular messenger are known as hormones
4.	Releasing and inhibitory hormones are produced by the pituitary gland