Question : What are the hormones of heart, kidney and G.I.tract ? What are their functions ?

Question : What are the hormones of heart, kidney and G.I.tract ? What

1.	Question : What are the hormones of heart, kidney and G.I.tract ? What are their functions ?
Answer» Solution :Hormones are also secreted by some TISSUES which are not endocrine glands. Heart : The atrial wall of our heart secretesa vary impotant peptide hormone called atrial natriuretic factor (ANF), which decreases blood pressure. When blood pressure is increased, ANF is secreted which causes dilation of the blood vessels. This reduces the blood pressure. Kidney : The juxtraglomerular cells of kidney produce a peptide hormone celled erythropoietin which stimulates erythropoiesis (formation of RBG). GI Tract : Endocrine cells are also present in different parts of the Gastrointential Tract (GI Tract). Gastro-intestinal tract SECRETE four mojor peptide hormones, namely secretin, gastrin, cholecystokinin (CCK) and gastric inhibitory peoptide (GIP). Gastrin : Stimulates the secretion of hydrochloric acid (HCI) and pepsinogen. Secretin : Acts on the exocrine pancreas and stimulates secretion of `H_(2)O` and BICARBONATE ions. CCK : Acts on pancreas and GALL bladder and stimulates the secretion of pancreatic enzymes and bile JUICE. GIP : Inhibits gastric secretion and motility. Several other non - endocrine tissues secrete hormones called growth factors. These factors are essential for the normal growth of tissues and their repairing /regeneration.