Question
Biology Question on chemical coordination and integration
Which of the following statements is correct in relation to the endocrine system ?
Releasing and inhibitory hormones are produced by the pituitary gland
Adenohypophysis is under direct neural regulation of the hypothalamus
Organs in the body like gastrointestinal tract, heart, kidney and liver do not produce any hormones
Non-nutrient chemicals produced by the body in trace amount that act as intercellular messenger are known as hormones
Non-nutrient chemicals produced by the body in trace amount that act as intercellular messenger are known as hormones
Solution
Hormones are non-nutrient chemicals, which act as intracellular messengers and are produced in trace amounts. Endocrine cells are present in different parts of the gastrointestinal tract, e.g., gastric, secret in, GIP. Atrial wall of our heart secretes a peptide hormone called ANF (Atrial Natriuretic Factor), RH/IH are produced by hypothalamus. Adenohypophysis is not directly under neural control, it is under the control of hypothalamic hormones, brought by portal system.