What is an effect of adrenaline secretion?

14.3.1 Define a hormone as a chemical substance, produced by a gland and carried by the blood, which alters the activity of one or more specific target organs

14.3.2 Identify specific endocrine glands and their secretions, limited to adrenal glands and adrenaline, pancreas and insulin, testes and testosterone and ovaries and oestrogen

14.3.3 Describe adrenaline as the hormone secreted in ‘fight or flight’ situations and its effects, limited to increased breathing and pulse rate and widened pupils

14.3.4 Give examples of situations in which adrenaline secretion increases

14.3.5 State the functions of insulin, oestrogen and testosterone

14.3.6 Discuss the role of the hormone adrenaline in the chemical control of metabolic activity, including increasing the blood glucose concentration and pulse rate

14.3.7 Compare nervous and hormonal control systems in terms of speed and longevity of action