This lecture details the male reproductive system, focusing on its anatomy and physiology. It explains the structures involved in sperm production and transport, such as the testes and associated ducts, and describes the process of spermatogenesis, including its duration and rate. The lecture also highlights the crucial role of temperature regulation for testicular function, explaining the mechanisms involved like the cremaster muscle and the pampiniform plexus. Furthermore, it discusses the accessory glands that contribute to semen composition and touches upon the importance of testosterone and potential factors affecting male fertility, like endocrine disrupting chemicals.