question_answer 3)

List the hormones secreted by the following (a) Hypothalamus (b) Pituitary (c) Thyroid (d) Parathyroid (e) Adrenal (f) Pancreas (g) Testis (h) Ovary (i) Thymus (j) Atrium (k) Kidney (I) GI Tract  

Answer:

(a) Hypothalamus (i) Thyrotropin Releasing Hormone (TRH) (ii) Adrenocorticotropin releasing hormone (iii) Gonadotropin releasing hormone (iv) Somatotropin releasing hormone (v) Prolactin releasing hormone (vi) Melanocyte stimulating hormone releasing hormone (MSH-RH). (b) (i) Pars distalis part of pituitary (anterior pituitary) • Growth hormone (GH) • Prolactin (PRL) • Thyroid stimulating hormone (TSH) • Adrenocorticotrophic Hormone (ACTH) • Luteinising Hormone (LH) • Follicle Stimulating Hormone (FSH) (ii) Pars intermedia Melanocyte stimulating hormone (MSH) (iii) Pars nervosa (a) Oxytocin . (b) Vasopressin (c) Thyroid Thyroxine (T4) and triiodothyronine (T3) (d) Parathyroid Parathyroid hormone (PTH). (e) Adrenal (i) Adrenal medulla secretes (a) Adrenaline (b) Noradrenaline These are two commonly called as catecholamines. (ii) Adrenal cortex secretes corticoids (glucocorticoid and mineralo corticold). (f) Pancreas The a-cells secrete a hormone called glucagon, while the P-cells secrete insulin. (g) Testis Androgens mainly testosterone. (h) Ovary Oestrogen and progesterone. . (i) Thymus Thymosins. (j) Atrium Atrial Natriuretic Factor (ANF). (k) Kidney Erythropoietin (I) GI Tract Gastrin, secretin, cholecystokinin (CCK) and Gastric Inhibitory Peptide (GIP).