Adrenaline: Adrenaline is secreted by adrenal glands. Adrenaline prepares the body for fight or flight
Our body rects to adrenaline in the following ways
(i) The rate of heart beat increases in order to supply more oxygen to our muscles.
(ii) The blood supply to the digestive organ system and skin is reduced due to contraction of muscles around small arteries in these organs. This diverts the blood to our muscles.
(iii) Breathing rate is also increased due to the contraction of the muscles of the diaphragm and the ribs.
