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 section, you will be able to:Describe human male and female reproductive anatomiesDiscuss the human sexual responseDescribe spermatogenesis and oogenesis and discuss their differences and similarities

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:

"Penile circumcision dramatically reduces the risk of contracting HIV-1. This protection likely has multiple physical and biological mechanisms, and understanding these mechanisms could lead to non-surgical interventions to reduce HIV-1 transmission. Thus, researchers examined the microbiota and immune milieu before and after elective circumcision in two key areas. The coronal sulcus (CS), which is exposed to the air by foreskin removal and the urethra, which is thought to be the primary site of penile HIV-1 infection in circumcised men. The CS showed a dramatic decrease in pro-inflammatory anaerobic bacteria after circumcision, as well as significantly reduced inflammatory cytokines and chemokines. Circumcision also altered the urethral microbiota. However — in contrast to the CS — there were few changes to the urethral immune profile..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

Hank lets us in on the meaning of life, at least from a biological perspective - it's reproduction, which answers the essential question of all organisms: how do I make more of myself? So, sex, how does it work?

Chapters:
1) Gametes: Ova and Sperm
2) Sex Determination
3) Secondary Sexual Characteristics
4) Female Reproductive Structures
a) Uterus & Oviducts
b) Endometrium (Menstruation)
c) Cervix & Vagina
5) Male Reproductive Structures
a) Scrotum, Sminferous Tubules & Epididymas
b) Penis
c) Vas Deferens to Eurethra (Emission)