Adrenaline

• Adrenaline: a hormone secreted by the adrenal gland.
• Adrenaline increases pulse rate, makes the glycogen in muscles is converted to glucose and released into blood, makes you breathe deeper and more rapidly, airways become wider, and makes skin become pale as blood is diverted away.
• Adrenaline increases blood glucose concentration for respiration.
• Adrenaline is secreted for example: while bungee jumping or riding a rollercoaster