The endocrine organs or ductless glands passes the secretion into the blood . The secretion is called hormones. The endocrine organs are : a. Pituitary gland : Secretes growth hormones b. Thyroid gland : It is intimately concerned with metabolic activities. c. Adrenal gland : It produces hydrocortisone, adrenaline and noradrenaline d. Thymus: It is concerned with production of antibodies. |
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