What are the major secretions of the ovary? What are the actions of estrogens (estradiol)? What are the actions of progestins (progesterone)? What are the actions of androgens (testosterone) in the female? University of Cincinnati College of Medicine Reproductive Physiology Modules: Part 4.1.4. Requires the Macromedia Flash Player plug-in. A Blackboard course complete with goals, guide questions and quizzes is the framework for these modules.

In this interactive activity from NOVA, learn about the molecular structure of steroids. See the intermediate molecules that are part of the pathway for synthesizing cortisone from diosgenin.

In this new seminar, we will be focusing on three sports, swimming, cycling and running. There will be two components to the seminar, a classroom and a laboratory. The classroom component will introduce the students to the chemistry of their own biological system. Since we are looking at swimming, running and cycling as our sample sports, we will apply the classroom knowledge to complete a triathlon.

A narrated graphic depicting compartmentalization and regulation of aldosterone. Guide question - How is biosynthesis of aldosterone compartmentalized and regulated within the cell? University of Cincinnati College of Medicine Reproductive Physiology Modules: Part 1.3.3.

Guide questions - What types of gonadal tissue, internal reproductive tract and external genitalia do true hermaphrodites possess? What is the name of the most common form of ovarian dysgenesis and what are its gonadal manifestations? What is the most common karyotype in this disorder and what are common characteristics? What is the name of the most common form of seminiferous tubule dysgenesis? What are the minimal numbers of X and Y chromosomes that define this disorder? What is the frequency of this disorder and what are its gonadal manifestations? What are the principal characteristics of this disorder which help diagnose it in prepubertal boys? University of Cincinnati College of Medicine Reproductive Physiology Modules: Part 2.2.2.

An animation depicting formation of the placenta following fertilization. Guide questions - How does the placenta form a barrier between maternal and fetal circulations? What are the structural elements that form the barrier between maternal and fetal circulations? University of Cincinnati College of Medicine Reproductive Physiology Modules: Part 6.2.1.

An interactive animation depicting breast and mammary gland develop during pregnancy. Guide questions - How do the breasts and mammary glands develop during pregnancy? What hormones control mammary gland development? What is the difference between colostrum and milk?

This course covers all aspects of molecular biosignatures, such as their pathways of lipid biosynthesis, the distribution patterns of lipid biosynthetic pathways with regard to phylogeny and physiology, isotopic contents, occurrence in modern organisms and environments, diagenetic pathways, analytical techniques and the occurrence of molecular fossils through the geological record. Students analyze in depth the recent literature on chemical fossils. Lectures provide background on the subject matter. Basic knowledge of organic chemistry required. Students taking graduate version complete additional assignments.

In this interactive activity adapted from NOVA, learn about alkaloids and steroids, both examples of compounds with carbon rings. Short videos with interviews, animations, and photographs are featured.

Guide questions - At what point in life do spermatogonia begin to undergo meiosis? How many spermatozoa result from a single primary spermatocyte? What is spermiogenesis? What are the structural components of a mature spermatozoon? How long does it take for a primary spermatocyte to become a mature spermatozoon? What testicular hormone is required for maintenance of spermatogenesis? How do chronically high levels of anabolic steroids such as testosterone suppress spermatogenesis? University of Cincinnati College of Medicine Reproductive Physiology Modules: Part 5.2.1.