Human anatomy > Endocrine System > Hormones

The hormones are chemical substances in the body that act as messengers. They help the different parts of the body to function in coordination with one another. They are typically formed in one part of the body, even though it is meant to function someplace else. 

Although there is now a lot of knowledge and literature about hormones, they actually were not widely known to exist up until the 1900s. Today, there are over 30 known hormones in the body, and many studies and research have been conducted on them. Because most hormones in the human body are created in the endocrine gland, doctors who specialize in the study, evaluation and treatment of hormones are called endocrinologists. 

There are many bodily functions that are directly influenced by hormones; some included are things like growth and development and reproduction. Hormones are largely responsible for the way the sexes look, act and feel, and play a large role in puberty as well. Puberty is basically the time in a person’s life when their respective organs begin to secrete sex hormones for men and women, which is testosterone and estrogen, respectively. The production of these hormones is responsible for teenagers going into a sort of “awkward phase,” where their bodies, voices, mindsets, and even attitudes are in continuous change. This is the process of adolescents becoming full-grown adults. 


Hormones are also responsible for the formation of the sexuality of the adult. Male sex hormones are called testosterone, whereas the female hormone is called estrogen. These are the basic functions of the two:


  • Responsible for the development of breasts
  • Additional development of the uterus and the ovaries of the woman, which are two very important parts of a woman’s ability to have children.
  • Widening of the pelvic bone so as to prepare the woman’s body for child bearing.
  • Participate in the monthly menstruation of the woman in preparation for the possibility of pregnancy
  • Also participates in the occurrence of a pregnancy
  • Promotes blood clotting



  • Responsible for the development of masculine features, such as facial hair.
  • Development of masculine traits, both primary and secondary
  • Develops bone mass and muscle tone – hence, the ability of men to be able to bulk up on muscles faster

There is currently a lot of research going on as to the extent of the actual involvement of hormones in the sexual function and desire of people. It has become somewhat of a notion that women who are emotional and moody are like this due to their hormones going out of control. While there may be truth to this, research shows that there is more to it than just that one simplification of the fact. Some research suggests that the sex hormones have no real effect on the sex drive of women, as 90% of menopausal women reported that there had been no change in their sex drive prior to stopping menstruation. Despite this discovery, there is still a sort of vagueness that surrounds this topic, which is the reason why research is still going on every day.

© Copyright 2010-2012 GenericLook.com