Zoology - Chemical Coordination and Integration Question with Solution | TestHub

Glucocorticoids, mainly cortisol hormone, produce anti-inflammatory reactions and suppress the immune response. They also stimulate$\text{RBC}$production. Adrenaline or epinephrine is secreted from the adrenal medulla in response to stress or emergency or fight, flight and fright conditions. Thyroxine regulates BMR, maintains water-electrolyte balance and supports RBC formation. Thyrocalcitonin (TCT) is a long peptide hormone secreted by parafollicular cells of the thyroid gland (C-cells). Its secretion is regulated by an increased plasma level of calcium by a feedback mechanism. TCT lowers calcium level in the blood to normal by increasing calcium deposition in the bones, so it checks osteoporosis and stimulates excretion of calcium in the urine.