Question
Biology Question on chemical coordination and integration
Fight and flight hormone is
adrenaline
thyroxine
ADH
oxytocin
adrenaline
Solution
Adrenaline, released by adrenal medulla, are a part of the fight or flight reaction that prepares the body to meet the stress, pain, anger, fear etc. It increases blood pressure, basal metabolic rate, lipolysis in adipose tissue to increase level of fatty acids in blood, acts as vasodilator, increase respiration rate as it dilates trachea, increases sugar level in blood etc. Adrenaline is also called emergency hormone. Thyroxine control BMR (basal metabolic rate) of the body. ADH is antidiuretic hormone. It is also called vasopressin. It acts on the kidney and concentrating the urine by promoting the reabsorption of water and salt into the cortical collecting duct. Oxytocin is birth hormone and milk ejecting hormone.