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Which of the following statements is correct in relation to the endocrine system?
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- 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.
- Releasing and inhibitory hormones are produced by the pituitary gland.
- Adenohypophysis is under direct neural regulation of the hypothalamus.
Correct Option: B
Hormones are non-nutrient chemicals which act as intercellular messengers and are produced in trace amounts. Gastrointestinal tracts secretes four major peptide hormones – gastrin, secretin, cholecystokinin (CCK) and gastric inhibitory peptide (GIP) while juxtaglomerular cells of kidney secretes erythropoietin, a peptide hormone. Releasing and inhibitory hormones are produced by hypothalamus. Neurohypophysis or posterior pituitary is under direct neural regulation of the hypothalamus.