Hormones are alternate way of coordination in animals. It helps in coordinating information when it comes for wider distribution of information to all tissues. Hormones help in regulating growth in our body. Adrenaline hormone from endocrine gland helps in stress situations. Thyroxin hormone is necessary for balanced growth. Growth hormone controls growth in our body. Insulin hormone regulates blood glucose level. Get Hormonal Coordination in Animals Homework Help from expert tutors at tutorspoint

Hormonal Coordination in Animals Homework Help

Hormones are defined as chemical compounds secreted by specialized cells or glands which are helpful in transmitting information to different locations. It is also helpful in wider distribution of information in animals. Hormones constitute an alternate way of coordination in animals besides electrical impulse transmission of information using nerve cells.

Growth regulation by hormones

Hormones secreted by various glands like endocrine glands (Fig 1) in our body helps in regulating growth by performing certain specific functions e.g. adrenaline, thyroxin, growth hormone, insulin, Testosterone and estrogenetc. Secretion of these hormones should be in accurate quantity and very precise as minor changes in their level in body may result in serious effects.

Endocrine glands in female and male


This hormone is secreted by adrenal gland and is released in stress situations like fear, pain, anxiety etc. It generally acts on heart. Response of this hormone includes faster heart beat, increased breathing rate and contraction of muscles around digestive system, skin, diaphragm and rib muscles.


This hormone is secreted by thyroid gland and helps body to get a balanced diet for proper growth. Thyroxin plays major role in metabolizing protein, fats etc. Iodine plays a major role in the secretion of thyroxin. This is the reason why iodized salt is advised in diet. Deficiency of iodine leads to goitre disease with symptoms of swollen neck.

Growth hormone

This hormone helps in proper and balanced growth and development of the body. Deficiency of this hormone in childhood may lead to dwarfism.


This hormone is secreted by pancreas and it regulates the glucose level in blood. As the level of insulin decreases in our body concentration of glucose starts increasing leading to diabetes and many other side effects.

Testosterone and estrogen

Testosterone in case of males and estrogen in case of females are sex hormones that are produced at the time of puberty and helps in development of secondary sex characters in our body.