Endocrine glands are the ductless glands which pour their secretions directly into the bloodstream. Secretions are called as Hormones. The human endocrine system consists of major glands like the pituitary, pineal, adrenal gland, pancreas, testis (in the male), and ovary (in female), thyroid, and thymus. Here is the list of the major endocrine glands and their hormones.
| Endocrine Gland | Hormonal secretions |
|---|---|
| 1. (a) Pituitary (anterior) gland | i) Growth hormone (GH) ii) Prolactin iii) Thyrotropic Hormone (TSH) iv) Follicle-stimulating hormone (FSH) v) Luteinizing Hormone (LH) vi) Adrenocorticotrophic hormone (ACTH) |
| 1. (b) Pituitary (intermediate) gland | Melanocyte stimulating hormone (MSH) |
| 1. (c) Pituitary (posterior) gland | i) Oxytocin ii) Vasopressin |
| 2. Thyroid gland | i) Tri-iodo-thyronine (T3) ii) Thyroxine (T4) iii) Calcitonin |
| 3. Parathyroid gland | Parathormone |
| 4. Thymus Gland (Lymph gland) | Thymosin |
| 5. Adrenal or suprarenal gland | i) Glucocorticoids i.e cortisone ii) Mineralocorticoids i.e aldosterone iii) Sex-steroids i.e Progesterone,estrogen and androgens iv) Adrenaline |
| 6. Pancreas | i) Glucagon ii) Insulin iii) somatostatin |
| 7. Testis | Testosterone |
| 8. Ovary | i) Estrogen ii) Progesterone |