Biology is designed for multi-semester biology courses for science majors. It is …
Biology is designed for multi-semester biology courses for science majors. It is grounded on an evolutionary basis and includes exciting features that highlight careers in the biological sciences and everyday applications of the concepts at hand. To meet the needs of today’s instructors and students, some content has been strategically condensed while maintaining the overall scope and coverage of traditional texts for this course. Instructors can customize the book, adapting it to the approach that works best in their classroom. Biology also includes an innovative art program that incorporates critical thinking and clicker questions to help students understand—and apply—key concepts.
By the end of this chapter, you will be able to:Describe the …
By the end of this chapter, you will be able to:Describe the roles of male and female reproductive hormonesDiscuss the interplay of the ovarian and menstrual cyclesDescribe the process of menopause
This resource is a video abstract of a research paper created by …
This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:
"Many metabolic diseases show clear differences in how they manifest between males and females. While gonadal steroid hormones have been suggested as the underlying cause, the gut microbiome could also play a critical role. A new study investigated how the makeup and function of the gut microbiome is related to sex, menopausal status, and circulating gonadal steroids in humans. Important differences in gut microbiota composition and functionality were found between (a) pre-menopausal women and (b) men and post-menopausal women. But obesity overrode those differences. In addition, microbiome profiles were associated with certain gonadal steroids, particularly circulating testosterone and serum progesterone. Interestingly, microbiome signatures could be transferred from human donors to microbiome-depleted male mice, with the microbiome of mice 4 weeks after transplantation predicting donors’ testosterone levels..."
The rest of the transcript, along with a link to the research itself, is available on the resource itself.
The hypothalamus is inherently female. Testosterone 'defeminizes' the brain during embryogenesis and …
The hypothalamus is inherently female. Testosterone 'defeminizes' the brain during embryogenesis and eliminates the GnRH surge centre in males. The female foetus has no testes to produce testosterone, thus developes a hypothalamic GnRH surge centre.
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