Module 3S2 Chemistry of Reproduction

Explore

 

Hormone control of the male reproductive system is important for proper sexual development and gamete production. When the male sex hormones are secreted, how the hormones control sexual development and gamete production and what happens to the male reproductive system as aging occurs will be better understood as you do the following reading and view the video.

 

Read

 

By reading pages 492 to 495 of your textbook, you will review how the chromosomal sex of an individual is determined and how the male sex hormones cause male development of the embryo.  You will advance your learning by reading about how the male reproductive system is further developed and matured in puberty, as well as about the changes that occur throughout the aging process.

 

Watch and Listen

 

It is very important to understand when the main periods of hormone production occur, what the hormones produced are, what the function of each hormone is, and how the hormones are regulated in the male body. To help you further develop a clear understanding of the hormone control of the male reproductive system from utero, through puberty, and aging, watch the following video clip.

 

Watch the video clip, which will first look at normal function and control of the male sex hormones.

 

You should make summary notes on the material that you will be reviewing and store this information in your course folder. Remember that an excellent way to summarize hormone information is in the form of a feedback loop or a flow chart.

 

 

Male Reproductiive Hormones

 

Discuss

 

In the discussion board you have access to, discuss one, a few, or all of the following questions:

 

1. What can happen if the production of a hormone is not regulated properly?
2. Have you ever encountered any pressure to ‘beef-up’, meaning try anabolic steroids?
3. Do you think teens, such as yourself fully understand the implications of using steroids?
4. Is having the ‘right’ image of being male affecting young men today? If so how?

 

Self-Check

 

Test your understanding of the negative feedback control of the male sex hormones by correctly labeling the following Hormonal Control of Male Reproductive System diagram. Check your answers with your teacher or classmates and store your work in your course folder.

 

Label the numbered structures on the following diagram:

 

 

Inquiry into Biology (Whitby, ON: McGraw-Hill Ryerson, 2007), BLM14.3.1 Reproduced by permission.