Question

Hormone secreted during emergency is
A. Aldosterone
B. Calcitonin
C. Thyroxine
D. Adrenaline

Answer 1

Hint: The endocrine system in the human body is responsible for secretion of different hormones through various glands present inside the body. These hormones are secreted into the bloodstream from the producer gland and reach the target organ where they exert their effect. Hormones influence many of the biological functions such as reproduction, metabolism, growth and many others. Each hormone has a specific function and a specified gland from which it is produced.

Complete answer: Hormones are required during emergencies mainly to exhibit the flight or fight response. Emergency hormones are secreted to initiate a quick response so that the individual can respond to the stress situation they are facing at that moment. Emergency hormones also increase the metabolic rate, causes dilation of blood vessels so that more blood flows to the brain and heart, it increases the heart rate, it causes dilation of the pupils and many other associated responses. All these changes are brought about so that the individual can get over the stress period as fast as possible and come back to their original resting state. Among the hormones listed in the option the hormone that is secreted during emergency is Adrenaline. This hormone is produced by adrenal medulla of the Adrenal gland and carries out the above stated functions during stressful periods. Among the other hormones listed aldosterone is also produced by the Adrenal gland but it helps to regulate salt and water concentration in the body. Thyroxine is produced by the Thyroid gland and plays a major role in the metabolism, growth and development of the body and Calcitonin is also produced by the Thyroid gland and this hormone helps to regulate the calcium level of the blood.

So the correct option is D) Adrenaline.

Note: Thus hormones play a major role in our bodies by regulating a wide variety of processes and so they should be regulated in a proper manner because an over or under production of them can also lead to various diseases.