The male and female reproductive systems consist of the gonads, testes or ovaries; the reproductive tract; the external genitalia; and the hypothalamic-pituitary unit. The functions of the reproductive system are to produce and deliver gametes, spermatozoa or oocytes, for sexual reproduction; and produce hormones that regulate reproductive function and secondary sex characteristics. Abnormalities in anatomic or physiologic function affect the development and delivery of gametes, and potential fertility. This book provides a comprehensive review of the anatomy and physiology specific to reproduction, emphasizing developmental and hormonal processes of gamete production, fertilization, implantation, and embryonic development. This review has been designed to meet the educational needs of physicians and allied health professionals who care for couples experiencing infertility. By developing a clear understanding of what is normal, you will better understand abnormalities affecting reproduction and the mechanisms behind treatment.