Mention which of the statements are true (T) and which are false (F). Give reason in support of your answer.

(a) Adrenaline is often described as the emergency hormone. (T/F)

(b) There are two kinds of diabetes (mild and severe) related to two different hormones. (T/F)

(c) Simple goitre can be prevented by using iodized salt in food. (T/F)

(d) Pituitary is popularly called the master gland. (T/F)

(e) Hormones "obey" the commands like "enough, slow down or "too little, speed up". (T/F)

(f) Gigantism and dwarfism in humans basically depend on the quality and quantity of the food eaten during the early growing age. (T/F)

(a) True.

Explanation: Adrenaline is called an emergency hormone as it prepares the body either to fight with or flight away from any emergency situation.

(b) False

Explanation: There are two different kinds of diabetes – diabetes insipidus and diabetes mellitus which are related to two different hormones ADH and insulin respectively. Undersecretion of insulin from pancreas causes diabetes mellitus and deficiency of ADH causes diabetes insipidus.

(c) True

Explanation: Simple goitre is caused due to deficiency of iodine in the diet as iodine plays an important role in the synthesis of thyroxine hormone hence doctors advised to take iodized salt in the diet.

(d) True

Explanation: Pituitary gland is called the master gland as it controls all other endocrine glands and their secretions.

(e) True

Explanation: When there is any change in the level of hormones in our body beyond the normal level a message is generated in our body system to maintain the normal levels and this mechanism is called feedback mechanism. If the levels of hormones is more then a message to “slow” down command is generated similarly if levels of hormones is less then a command to “increase” is generated.

(f) False

Explanation: Gigantism and dwarfism are caused due to oversecretion and under secretion of growth hormones from pituitary respectively in childhood.