Biological Foundations of Adult Sexual Development : March 15th, 2010

Biological Foundations of Adult Sexual Development Paper

The interaction between hormones and behavior affects the development of adult sexuality. Hormones affect one’s behavior and one’s behavior can affect their adult sexuality. Hormones associate with every different organ system in the human body.     It has not yet been proved if one’s sexual orientation is upon birth but rather that is a variety of factors including hormones, environmental factors, and genetic influences. Sexual orientation of men and women is extremely crucial. Without it, we would be extinct. Sex is not a necessity however we as humans would not evolve or reproduce and upon it would be our demise.

Some might show abnormal behavior and or illness due to lower hormonal levels or extremely high hormonal levels. Children possibly having sexual like hormones at an early age could possibly demonstrate insistent and forceful behavior as well as their physical characteristics in their adult sexual behavior and orientation. In adults, changes that result in lower or higher hormonal levels may have significant effects on logical ability for their memory, learning, and arousing states. (Gladue, 1994).

Wickens (2005) stated “nearly every cell in the human body contains 23 pairs of chromosomes, which carry the 30,000 or so genes that we inherited from our parents at the moment of conception.” (p. 204). This shows that is it necessary to have sex in order to create the so called circle of life and the process of evolution through the human species. Behavior can depend on one’s reproductive organs and hormones, but also on the brain. Our brain helps organize our sexual tendencies that are needed for an encounter with the opposite sex in order to reproduce and engage in the activity of sex for evolutionary and enjoyable purposes.  In order to understand why we reproduce, we must first understand sexual development.

When humans are born, they have a large number of the same physical features. Male and female will stay in this state until each reaches a certain level of maturity reached through puberty. Once both genders have reached the level of maturity through puberty, each is now capable of reproducing. Males will release more testosterone levels and typically have what we know it as a growth spurt. This is caused by the maturation of the testicles. This will also allow the male to grow more facial and genital hair, have a deeper voice, and the capability of ejaculating. When women reach puberty, which is typically before males, their sex hormones are released making a woman start her menstrual cycle, grow a more voluptuous figure to include larger breasts and wider hips. (Wickens, 2005).

The development of a male or female and their sexual orientation, is generally determined by the same dynamics that are caused by our bodies being masculine or feminine. As a result of  assured abnormalities in the process of sexual orientation and behavior, even one’s exterior may not match genetic gender. Biological foundations of adult sexual development include hormones, behavior, environmental factors, and genetics. There are several key biological changes in sexual development to include the transformation from child to adult through the maturation process of puberty.

There are also biological psychology processes on sexual orientation through the neuroendocrine system. In conclusion, sexual orientation of men and women is extremely crucial. Without it, we would be extinct. Sex is not a necessity however we as humans would not evolve or reproduce and upon it would be our demise.


Gladue, B. A. (1994, October). The Biopsychology of Sexual Orientation. Current Directions in        Psychological Science, 3(5), 150-154       

Wickens, A. (2005). Foundations of Biopsychology (2nd ed.). : Prentice Hall, Inc. A Pearson Education Company.


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s