Unit B Reproduction and Development


Concept Organizer

The concept organizer shows the relationships among the reproductive structures, hormones, and development. In mammals, a properly functioning reproductive system is needed to maintain a healthy body and to produce a healthy family. This leads also to the continuation of the species. The concept organizer of the unit inquiry indicates how reproductive systems, hormones, and development are required to produce healthy offspring. The importance of  reproductive technologies and their effects on all areas is shown as well as the significance of the transmission of sexually transmitted infections (STIs). You may find benefit in referring to this concept organizer as you work through the unit; it can function as a study guide.



Unit B Concept Organizer. ADLC.


The Male and Female Reproductive Systems

This section of Module 3 examines both the male and female human reproductive systems, including the structures and their functions involved in the production of the sex cells, or gametes. You will differentiate primary and secondary sex characteristics, and you will compare and contrast the sperm and egg. You will study how sexually transmitted infections affect reproductive systems and a developing fetus.

You will be asked to apply your knowledge to answer the following question:

  • What are the structures of the male and female reproductive systems, and how do these structures function to ensure the survival of the human species through reproduction?

Reproductive Hormones

In this section of Module 3, you will learn how hormones regulate both the male and female human reproductive systems. You will study, in males, how the hormone feedback system initiates puberty, maintains a constant level of function through the reproductive years, and causes change in the aging process. You will examine, in females, the detailed hormonal control of the monthly menstrual cycle, the consequences to the cycle whether fertilization has occurred or not, and the hormonal action that results in menopause.

At the end of this module, your knowledge should allow you to answer the following question:

  • How is the homeostasis of reproduction maintained by hormones in the male and female?

Human Development

In this module, you will learn about the process of human development, especially the key development periods of fertilization, cleavage, implantation, cell differentiation, the placenta, and fetal development to the outcome of birth. You will examine substances and conditions that can affect normal embryonic and fetal development. You will focus on reproductive technologies that prevent and enhance reproduction potential and on the ethical, moral, legal, and personal issues that surround them.

At the completion of this module, you should be able to answer the following question:

  • What is normal embryonic and fetal development, and how can genetic, hormonal, and environmental factors affect this development?